From acac3fb9f6581d444dce2868dd401bbe7ed6fd45 Mon Sep 17 00:00:00 2001
From: Sascha Schulz <sschulz@dh-software.de>
Date: Mo, 15 Jan 2024 18:26:51 +0100
Subject: [PATCH] Merge branch 'draft'

---
 index.html | 2277 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 2.275 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index 6f46a19..0aacea8 100644
--- a/index.html
+++ b/index.html
@@ -1317,6 +1317,9 @@
 						</pre>
 					</section>
 					<section>
+						<img data-src="/assets/images/constructor-and-its-prototype.svg">
+					</section>
+					<section>
 						<div>Dynamische Änderung des Prototypen</div>
 						<pre>
 							<code class="js" data-trim data-line-numbers>
@@ -1360,9 +1363,26 @@
 						</pre>
 					</section>
 					<section>
-						<h3>Vererbung</h3>
+						<h3>Lösung</h3>
 						<pre>
 							<code class="js" data-trim data-line-numbers>
+								Array.prototype.sum = function() {
+									let sum = 0;
+								
+									for (let number of this) {
+										sum += number;
+									}
+								
+									return sum;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Vererbung</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers="1-13|15-18|20-29">
+								// Oberklasse
 								function Shape() {
 								}
 								
@@ -1370,18 +1390,22 @@
 									return "Shape";
 								}
 								
+								// Unterklasse
 								function Rectangle(a, b) {
 									this.a = a;
 									this.b = b;
 								}
 								
+								// Prototype der Oberklasse in die Unterklasse kopieren
 								Rectangle.prototype = Object.create(Shape.prototype);
+								// Konstruktor der Oberklasse am Prototypen durch den eigenen ersetzen
 								Rectangle.prototype.constructor = Rectangle;
 								
 								const r = new Rectangle(2, 3);
 								
 								console.log(r.getType());
 								
+								// .getType() selber implementieren
 								Rectangle.prototype.getType = function() {
 									return "Rectangle";
 								}
@@ -1399,6 +1423,2255 @@
 					<section>
 						<img data-src="/assets/images/inheritance-es5.svg">
 					</section>
+					<section>
+						<div>
+							<img width="800" height="500" data-src="/assets/images/mdn-prototype.jpg">
+						</div>
+						<p>
+							<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push" style="font-size: 16px">https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push</a>
+						</p>
+					</section>
+					<section>
+						<h3>Objektorientierung in es6</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								class Rectangle {
+									constructor(a, b) {
+										this.a = a;
+										this.b = b;
+									}
+								
+									getArea() {
+										return this.a * this.b;
+									}
+								}
+								
+								const r = new Rectangle(2, 3);
+								
+								console.log(r.getArea());
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								6
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Vererbung in es6</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers="1-6|8-16|18-27">
+								// Oberklasse
+								class Shape {
+									getType() {
+										return "Shape";
+									}
+								}
+								
+								// Unterklasse erbt von Oberklasse
+								class Rectangle extends Shape {
+									constructor(a, b) {
+										super();
+								
+										this.a = a;
+										this.b = b;
+									}
+								}
+								
+								const r = new Rectangle(2, 3);
+								
+								console.log(r.getType());
+								
+								// Implementierung per Prototype weiterhin möglich, falls man so will
+								Rectangle.prototype.getType = function() {
+									return "Rectangle";
+								}
+								
+								console.log(r.getType());
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Shape
+								Rectangle
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Asynchronität</h3>
+						<p>Asynchron: Es wird nicht auf die Beendigung des Befehls gewartet, sondern mit dem Programm fortgefahren. Die Vollendung des asynchronen Befehls tritt <i style="font-style: italic">irgendwann</i> in der Zukunft ein.</p>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								setTimeout(callback, time); // Ausführung nach [time] Millisekunden
+								setInterval(callback, interval); // Ausführung alle [interval] Millisekunden
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								setTimeout(function() {
+									// Code, der nach 2 Sekunden ausgeführt wird
+									console.log("zweiter");
+								}, 2000);
+								
+								console.log("erster");
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								erster
+								zweiter
+							</code>
+						</pre>
+					</section>
+					<section>
+						<p>Aufgabe: Schreibe ein Programm, das zwei weitere beliebige Texte mit jeweils 2 Sekunden Verzögerung von einander ausgibt, d.h.</p>
+						<p>"erster" -> 2s -> "zweiter" -> 2s -> "Text A" -> 2s -> "Text B"</p>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								setTimeout(function() {
+									console.log("zweiter");
+								
+									// weiterer Code
+								}, 2000);
+								
+								console.log("erster");
+							</code>
+						</pre>
+					</section>
+					<section>
+						Lösung: Callback-Hell oder Pyramide des Todes
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								setTimeout(function() {
+									console.log("zweiter");
+								
+									setTimeout(function() {
+										console.log("Text A");
+								
+										setTimeout(function() {
+											console.log("Text B");
+										
+											
+										}, 2000);
+									}, 2000);
+								}, 2000);
+								
+								console.log("erster");
+							</code>
+						</pre>
+					</section>
+					<section>
+						Hilfsmittel: Promises
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								new Promise(function (resolve, reject) {
+									// ich bin fertig
+									resolve();
+								
+									// es ist ein Fehler aufgetreten
+									reject();
+								});
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const p = new Promise(function (resolve, reject) {...});
+								const p2 = new Promise(function (resolve, reject) {...});
+								const p3 = new Promise(function (resolve, reject) {...});
+								const p4 = new Promise(function (resolve, reject) {...});
+								
+								p
+									.then(function() { return p2; })
+									.then(function() { return p3; })
+									.then(function() { return p4; });
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								console.log("erster");
+								
+								delay(2000)
+									.then(function () {
+										console.log("zweiter");
+								
+										return delay(2000);
+									})
+									.then(function() {
+										console.log("Text A");
+								
+										return delay(2000);
+									})
+									.then(function() {
+										console.log("Text B");
+									})
+							</code>
+						</pre>
+					</section>
+					<section>
+						Aufgabe: Implementiere die Funktion "delay"
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const delay = function() {
+									// implementieren
+								}
+								
+								console.log("erster");
+								
+								delay(2000)
+									.then(function () {
+										console.log("zweiter");
+								
+										return delay(2000);
+									})
+									.then(function() {
+										console.log("Text A");
+								
+										return delay(2000);
+									})
+									.then(function() {
+										console.log("Text B");
+									})
+							</code>
+						</pre>
+					</section>
+					<section>
+						Lösung:
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const delay = function(ms) {
+									return new Promise(function(resolve, reject) {
+										setTimeout(function() {
+											resolve();
+										}, ms);
+									});
+								}
+								
+								console.log("erster");
+								
+								delay(2000)
+									.then(function () {
+										console.log("zweiter");
+								
+										return delay(2000);
+									})
+									.then(function() {
+										console.log("Text A");
+								
+										return delay(2000);
+									})
+									.then(function() {
+										console.log("Text B");
+									})
+							</code>
+						</pre>
+					</section>
+					<section>
+						Rückgabewerte mit Promises
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const p = new Promise(function(resolve, reject) {
+									resolve("ok");
+								});
+								
+								p.then(function(value) {
+									console.log(value);
+								});
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								ok
+							</code>
+						</pre>
+					</section>
+					<section>
+						Fehlerbehandlung mit Promises
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const p = new Promise(function(resolve, reject) {
+									reject(new Error("Fehler"));
+								});
+								
+								p
+									.then(function() {
+										console.log("Ich werde nicht aufgerufen")
+									})
+									.catch(function(e) {
+										console.log(e.message);
+									});
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Fehler
+							</code>
+						</pre>
+					</section>
+					<section>
+						Datei lesen mit NodeJS
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const fs = require("fs");
+								
+								fs.readFile("./hello.txt", {encoding: "utf8"}, function(error, data) {
+									console.log(data);
+								});
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Hello World!
+							</code>
+						</pre>
+					</section>
+					<section>
+						Aufgabe: "Promisifiziere" analog zu "delay" in der letzten Aufgabe den Aufruf von fs.readFile()
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const fs = require("fs");
+								
+								function readFile() {
+									// implementieren
+								}
+								
+								readFile("./hello.txt").then(function(content) {
+									console.log(content);
+								});
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Hello World!
+							</code>
+						</pre>
+					</section>
+					<section>
+						Lösung:
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const fs = require("fs");
+								
+								function readFile(path) {
+									return new Promise(function (resolve, reject) {
+										fs.readFile(path, {encoding: "utf8"}, function(error, data) {
+											resolve(data);
+										});
+									});
+								}
+								
+								readFile("./hello.txt").then(function(content) {
+									console.log(content);
+								});
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Hello World!
+							</code>
+						</pre>
+					</section>
+					<section>
+						Aufgabe: Nutze die vorherige Lösung nun für eine Promise-Kette, sodass die Inhalte der zwei Dateien "hello.txt" und "hallo.txt" nacheinander ausgegeben werden:
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Hello World!
+								
+								Hallo Welt!
+								
+							</code>
+						</pre>
+					</section>
+					<section>
+						Lösung:
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const fs = require("fs");
+								
+								function readFile(path) {
+									return new Promise(function (resolve, reject) {
+										fs.readFile(path, {encoding: "utf8"}, function(error, data) {
+											resolve(data);
+										});
+									});
+								}
+								
+								readFile("./hello.txt")
+									.then(function(content) {
+										console.log(content);
+								
+										return readFile("./hallo.txt");
+									})
+									.then(function(content) {
+										console.log(content);
+									});
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Hello World!
+								
+								Hallo Welt!
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Async - Await</h3>
+						<ul>
+							<li>Syntaktischer Zucker für Promises</li>
+							<li>Nutzung von <code>await</code> nur im Kontext einer <code>async</code>-Funktion möglich</li>
+						</ul>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								async function wrapper() {
+									const p = new Promise(function(resolve, reject) {
+										resolve("Hello from Promise!");
+									});
+									
+									const result = await p;
+									
+									console.log(result);
+								}
+								
+								wrapper();
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Hello from Promise!
+							</code>
+						</pre>
+					</section>
+					<section>
+						Aufgabe: Schreibe die Lösung der vorherigen Aufgabe nach Async - Await um
+					</section>
+					<section>
+						Lösung:
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const fs = require("fs");
+								
+								function readFile(path) {
+									return new Promise(function (resolve, reject) {
+										fs.readFile(path, {encoding: "utf8"}, function(error, data) {
+											resolve(data);
+										});
+									});
+								}
+								
+								async function wrapper() {
+									const content1 = await readFile("./hello.txt");
+									const content2 = await readFile("./hallo.txt");
+								
+									console.log(content1);
+									console.log(content2);
+								}
+								
+								wrapper();
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Hello World!
+								
+								Hallo Welt!
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Destructuring</h3>
+						<p>Auflösen von komplexen Strukturen</p>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								// Objekt destrukturieren (per Attribut-Namen)
+								const { a, b } = { a: 1, b: 2 };
+								
+								console.log(a);
+								console.log(b);
+								
+								// Array destrukturieren (per Position)
+								const [ c, d ] = [3, 4];
+								
+								console.log(c);
+								console.log(d);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								1
+								2
+								3
+								4
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								// Bei Objekten Elemente umbenennen oder auch auslassen
+								const { a: x, b: y } = { a: 1, b: 2, c: 3 };
+								
+								console.log(x);
+								console.log(y);
+								
+								// Bei Arrays Elemente auslassen
+								const [ , a, b, , c] = [3, 4, 5, 6, 7, 8];
+								
+								console.log(a);
+								console.log(b);
+								console.log(c);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								1
+								2
+								4
+								5
+								7
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								// Verschachteltes Destructuring
+								const {a: [, x, ] } = { a: [0, 1, 2]};
+								
+								console.log(x);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								1
+							</code>
+						</pre>
+					</section>
+					<section>
+						Aufgabe: x soll die 5 enthalten
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const o = { a: [0, {b: [0, 5]}, 2]};
+								
+								const  { /* Destructuring-Ausdruck */ } = o;
+								
+								console.log(x);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								5
+							</code>
+						</pre>
+					</section>
+					<section>
+						Lösung:
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const o = { a: [0, { b: [0, 5] }, 2]};
+
+								const { a: [, { b: [, x] }]} = o;
+								
+								console.log(x);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								5
+							</code>
+						</pre>
+					</section>
+					<section>
+						Aufgabe: x soll die 3 enthalten
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const o = { a: [0, {b: [0, { c: [{ x: 5 }, { d: 3}] }]}, 2]};
+								
+								const  { /* Destructuring-Ausdruck */ } = o;
+								
+								console.log(x);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								3
+							</code>
+						</pre>
+					</section>
+					<section>
+						Lösung:
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const o = { a: [0, {b: [0, { c: [{ x: 5 }, { d: 3}] }]}, 2]};
+
+								const  { a: [, {b: [, { c: [, { d: x}] }] }] } = o;
+								
+								console.log(x);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								3
+							</code>
+						</pre>
+					</section>
+					<section>
+						<p>Destructuring zum parallelen Ausführen von mehreren Promises</p>
+						<pre>
+							<code class="js" data-trim data-line-numbers="1-10|11-21">
+								const fs = require("fs");
+								
+								function readFile(path) {
+									return new Promise(function (resolve, reject) {
+										fs.readFile(path, {encoding: "utf8"}, function(error, data) {
+											resolve(data);
+										});
+									});
+								}
+								
+								async function wrapper() {
+									const [ content1, content2 ] = await Promise.all([
+										readFile("./hello.txt"),
+										readFile("./hallo.txt")
+									]);
+								
+									console.log(content1);
+									console.log(content2);
+								}
+								
+								wrapper();
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Try-Catch-Finally</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function throwError() {
+									try {
+										throw new Error("Fehler!");
+										return "Hello World!";
+									}
+									catch (e) {
+										return e.message;
+									}
+									finally {
+										console.log("Finally wird immer ausgeführt");
+										return "Finally!";
+									}
+								}
+								
+								const result = throwError();
+								console.log(result);
+							</code>
+						</pre>
+						<pre class="fragment">
+							<code class="bash" data-trim data-line-numbers>
+								Finally wird immer ausgeführt
+								Finally!
+							</code>
+						</pre>
+					</section>
+					<section>
+						<p>Anwendungsbeispiel für Try-Catch-Finally</p>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function readFromDatabase() {
+									try {
+										db.connect();
+										return db.read();
+									}
+									catch (e) {
+										console.log(e.stack);
+										return "";
+									}
+									finally {
+										if (db.open) {
+											db.close();
+										}
+									}
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Scope</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function a() {
+									const x = 5;
+								
+									return function() {
+										return x * x;
+									};
+								}
+								
+								const squareX = a();
+								const result = squareX();
+								
+								console.log(result);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								25
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>this</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								class MyClass {
+									constructor(a) {
+										this.a = a;
+									}
+								
+									getA() {
+										return this.a;
+									}
+								}
+								
+								const x = new MyClass(5);
+								const y = new MyClass(10);
+								
+								console.log(x.getA());
+								console.log(y.getA());
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								5
+								10
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								global.a = 5;
+
+								function foo() {
+									this.a += 10;
+								}
+								
+								foo();
+								
+								console.log(a);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								15
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								class MyClass {
+									/* ... */
+									setA() {
+										function f() {
+											this.a += 100;
+										}
+										f();
+									}
+								}
+								
+								const x = new MyClass(5);
+								
+								x.setA();
+								
+								console.log(x.getA());
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								TypeError: Cannot read property 'a' of undefined
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								class MyClass {
+									/* ... */
+									setA() {
+										const me = this;
+										function f() {
+											me.a += 100;
+										}
+										f();
+									}
+								}
+								
+								const x = new MyClass(5);
+								
+								x.setA();
+								
+								console.log(x.getA());
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								105
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Arrow-Funktionen</h3>
+						<ul>
+							<li>Kompakte Schreibweise einer normalen Funktion</li>
+							<li>Bei Einzeilern ist das <code>return</code> nicht notwendig</li>
+							<li>this-Pointer des aktuellen Kontextes wird beibehalten</li>
+						</ul>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								// Einzeiler
+								const f1 = _ => 1;
+								const f2 = () => 1;
+								const f3 = (x) => x * x;
+								const f4 = (x, y) => x + y;
+								
+								// Mehrzeiler
+								const f5 = (x, y) => {
+									return x * y;
+								};
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								class MyClass {
+									/* ... */
+									setA() {
+										const f = () => {
+											this.a += 100;
+										}
+										f();
+									}
+								}
+								
+								const x = new MyClass(5);
+								
+								x.setA();
+								
+								console.log(x.getA());
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								105
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Generator-Funktionen</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function* generator() {
+									let i = 0;
+								
+									while(true) {
+										yield i;
+										i++;
+									}
+								}
+								
+								const g = generator();
+								
+								console.log(g.next().value);
+								console.log(g.next().value);
+								console.log(g.next().value);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								1
+								2
+								3
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Generator-Funktionen</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function* generator() {
+									yield 1;
+									yield 2;
+									yield 3;
+								}
+								
+								const g = generator();
+								
+								for (const i of g) {
+									console.log(i);
+								}
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								1
+								2
+								3
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Nützliche Array-Funktionen</h3>
+					</section>
+					<section>
+						Aufgabe: Schreibe ein Programm, das den Gesamtumsatz aus dem ersten Halbjahr berechnet
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const revenues = [
+									{month: 0, revenue: 1000},
+									{month: 1, revenue: 2000},
+									{month: 2, revenue: 3000},
+									{month: 3, revenue: 4000},
+									{month: 4, revenue: 5000},
+									{month: 5, revenue: 6000},
+									{month: 6, revenue: 6000},
+									{month: 7, revenue: 5000},
+									{month: 8, revenue: 4000},
+									{month: 9, revenue: 3000},
+									{month: 10, revenue: 2000},
+									{month: 11, revenue: 1000}
+								];
+								
+								let totalRevenue = 0;
+								
+								/* ... */
+								
+								console.log(totalRevenue);
+							</code>
+						</pre>
+					</section>
+					<section>
+						Lösung
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								totalRevenue = revenues
+									.filter((revenue) => revenue.month < 6)
+									.map((revenue) => revenue.amount)
+									.reduce((sum, amount) => sum + amount, 0);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								21000
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+								
+								a.filter((e) => e > 2); // Filterung
+								a.map((e) => e * 2); // Umformung
+								a.reduce((p, e) => p + e, 0); // Zusammenrechnung / Reduzierung
+								a.some((e) => e > 5); // true wenn min. ein Element die Bedingung erfüllt
+								a.every((e) => e > 5); // true wenn alle Elemente die Bedingung erfüllen
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Map</h3>
+						<ul>
+							<li>auch als "assoziatives Array" bezeichnet</li>
+							<li>iterierbare Liste</li>
+							<li>ideal zur Assoziation von z.B. Hashes zu Objekt-Instanzen o.ä.</li>
+							<li>nutzbar ab es6 / es2015</li>
+							<li>löst herkömmliche Objekte als Hash-Map ab</li>
+						</ul>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const m = new Map();
+								
+								m.set("a", 0);
+								m.set("a", 1);
+								m.set("b", 2);
+								
+								m.has("c"); // => false
+								
+								m.delete("b");
+								
+								console.log(m.get("a")); // => 1
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								m.forEach((k, v) => console.log(k, v)) // => "a" 1 ...
+								
+								for (const entry of m.entries()) {
+									console.log(entry); // => ["a", 1] ...
+								}
+								
+								for (const key of m.keys()) {
+									console.log(key); // => "a" ...
+								}
+								
+								for (const value of m.values()) {
+									console.log(value); // => "1" ...
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Set</h3>
+						<ul>
+							<li>enthält nur einzigartige Werte</li>
+							<li>iterierbare Liste</li>
+							<li>ideale Struktur, wenn einzelne Werte einzigartig sein sollen</li>
+							<li>nutzbar ab es6 / es2015</li>
+							<li>löst individuelle Lösungen mittels Arrays und Array.prototype.indexOf o.ä. ab</li>
+						</ul>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const s = new Set();
+								
+								s.add("a");
+								s.add("a");
+								
+								s.has("c"); // => false
+								
+								s.delete("a");
+								
+								console.log(s.size); // => 0
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								s.forEach((k, v) => console.log(k, v)) // => "a" "a" ...
+								
+								for (const entry of m.entries()) {
+									console.log(entry); // => ["a", "a"] ...
+								}
+								
+								for (const key of m.keys()) {
+									console.log(key); // => "a"...
+								}
+								
+								for (const value of s.values()) {
+									console.log(value); // => "a" ...
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>DOM-Events</h3>
+						<ul>
+							<li>funktionale Ausführung von Code</li>
+							<li>Trigger können Klicks, Scrollen, Tastendrücke, Änderungen der Fenstergröße usw. sein</li>
+						</ul>
+					</section>
+					<section>
+						<img data-src="/assets/images/dom-events.svg">
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function doSomething(e) {
+									console.log("capture");
+								}
+								
+								function click(e) {
+									console.log("bubble");
+								}
+								
+								div.addEventListener("click", doSomething, true);
+								
+								button.addEventListener("click", click, false /* default */);
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								capturing
+								bubble
+							</code>
+						</pre>
+					</section>
+					<section>
+						<p>Aufgabe: Erweitere das vorherige Beispiel so, dass das div-Element einen weiteren Click-Handler bekommt,
+						der den Text "bubble2" anzeigt, nachdem "bubble" in der Konsole geloggt wurde.</p>
+						
+						<p>Erwartete Ausgabe:</p>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								capturing
+								bubble
+								bubble2
+							</code>
+						</pre>
+					</section>
+					<section>
+						<p>Lösung:</p>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function doSomething(e) {
+									console.log("capture");
+								}
+								
+								// neu
+								function doSomething2(e) {
+									console.log("bubble2");
+								}
+								
+								function click(e) {
+									console.log("bubble");
+								}
+								
+								div.addEventListener("click", doSomething, true);
+								div.addEventListener("click", doSomething2, false); // neu
+								
+								button.addEventListener("click", click, false /* default */);
+							</code>
+						</pre>
+					</section>
+					<section>
+						Die Bubble-Phase stoppen
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function click(e) {
+									e.stopPropagation()
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<p>Aufgabe: Ändere das Ergebnis des vorherigen Beispiels, sodass die Bubble-Phase auf Ebene des button-Elements gestoppt wird. Was ändert sich in der Ausgabe?</p>
+					</section>
+					<section>
+						<p>Lösung:</p>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function doSomething(e) {
+									console.log("capture");
+								}
+								
+								function doSomething2(e) {
+									console.log("bubble2");
+								}
+								
+								function click(e) {
+									e.stopPropagation();
+									console.log("bubble");
+								}
+								
+								div.addEventListener("click", doSomething, true);
+								div.addEventListener("click", doSomething2, false);
+								
+								button.addEventListener("click", click, false /* default */);
+							</code>
+						</pre>
+					</section>
+					<section>
+						Events programatisch triggern:
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								button.dispatchEvent(new Event("click"));
+							</code>
+						</pre>
+					</section>
+					<section>
+						Events sind synchron:
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								doSomethingElse();
+								
+								button.dispatchEvent(new Event("click"));
+								
+								doAnotherThing(); // wird erst ausgeführt, wenn zuvor alle Event-Handler fertig sind
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Strings</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const empty1 = "";
+								const empty1 = '';
+								
+								const s1 = 'abc';
+								const s2 = "abc";
+								
+								const s3 = 'a"b"c';
+								const s4 = "a\"b\"c";
+								
+								const s5 = 'a\'b\'c';
+								const s6 = "a'b'c";
+								
+								const s7 = `a'b'"c"`;
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h5>Strings zusammenfügen</h5>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const age = 10;
+								
+								// Konkatenation
+								const s = "My age is " + number + "!";
+								
+								// Interpolation
+								const s = `My age is ${number}!`;
+								
+								// => "My age is 10!"
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h5>Template Strings</h5>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function sayHello() {
+									return "Hello";
+								}
+								
+								let interpolation = `${sayHello()}`;
+								
+								// => "Hello"
+								
+								interpolation = `5 + 5 = ${5+5}`;
+								
+								// => "5 + 5 = 10"
+							</code>
+						</pre>
+					</section>
+					<section>
+						lit
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								return html`<div>hello world!</div>`
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function myTag() {
+									console.log(arguments);
+								
+									// return 5;
+									// return true;
+									return "abc";
+								}
+								
+								let interpolation = myTag`a ${5} b ${6} c`;
+								
+								// => "abc"
+							</code>
+						</pre>
+						<pre>
+							<code class="bash" data-trim data-line-numbers>
+								Arguments(3) [Array(3), 5, 6]
+									0 : (3) ['a ', ' b ', ' c', raw: Array(3)]
+									1 : 5
+									2 : 6
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h5>Aufgabe</h5>
+						<p>Schreibe ein Tag, welches die Zahlen aus den dynamischen Ausdrücken zusammenrechnet (<code>strings.js</code>)</p>
+					</section>
+					<section>
+						<h5>Lösung</h5>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function add(parts, ...numbers) {
+									return numbers.reduce((p, c) => p + c, 0);
+								}
+								
+								let sum = add`a ${5} b ${6} c`;
+								
+								console.log(sum);
+								
+								// => 11
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h5>Rest-Operator</h5>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								function add(...numbers) {
+									return numbers.reduce((p, c) => p + c, 0);
+								}
+								
+								add(1, 2, 3); // => 6
+							</code>
+						</pre>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const o1 = {a: 1, b: 2};
+								const o2 = {x: 5, y: 6, ...o1};
+							</code>
+						</pre>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								const a1 = [4, 5, 6];
+								const a2 = [1, 2, 3, ...a1];
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Relevante Browser-APIs</h3>
+					</section>
+					<section>
+						<h5>window</h5>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								window.innerWidth; // innere Auflösung des sichtbaren Fensters
+								window.innerHeight;
+								window.outerWidth; // äußere Auflösung des Browserfensters inklusive Adresszeile usw.
+								window.outerHeight;
+								
+								window.addEventListener(); // Events an das äußerste "Dach"-Element hängen
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h5>location</h5>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								location.href; // aktuelle URL
+								location.host; // aktuelle Domain, z.B. "www.google.de"
+								location.protocol; // aktuelles Protokoll, z.B. "https:"
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h5>Navigator</h5>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								navigator.language; // bevorzugte Browsersprache, z.B. "de"
+								navigator.userAgent; // z.B. "Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) [...]"
+								navigator
+									.mediaDevices
+									.getDisplayMedia(); // Fordere Erlaubis zum Streamen von Anwendungen oder Bildschirmen an
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h5>Document</h5>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								document.body; // &lt;body>-Element der Seite
+								document.activeElement; // aktives Element der Seite, welche gerade den Fokus besitzt
+								document.cookie; // für die aktuelle Seite gesetzte Cookies
+								document.execCommand("copy"); // Texte in die Zwischenablage zu schreiben
+								document.createElement("div"); // erzeuge neues DOM-Element mit angegebenen Tag
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h5>LocalStorage</h5>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								// auf 5MB Daten pro Domain begrenzt
+								localStorage.getItem(key); // Element holen
+								localStorage.setItem(key, value); // Element setzen
+								localStorage.removeItem(key); // Element entfernen
+							</code>
+						</pre>
+					</section>
+				</section>
+				<section>
+					<section>
+						<h2>CSS</h2>
+						<img data-src="/assets/images/css-sucks.png">
+					</section>
+					<section>
+						<h3>Warum CSS?</h3>
+						<ul>
+							<li>Erhöhte Zugänglichkeit des Inhalts</li>
+							<li>Wiederverwendbarkeit</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Syntax</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								selector [, selector2, selector3, ...] {
+									property1: value;
+									property2: value;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Beispiel</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								html, body {
+									width: 100%;
+									height: 100%;
+									margin: 0;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Selektoren</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								/* Elemente */
+								html, body {...}
+								
+								/* IDs */
+								#my-id {...}
+								
+								/* Klassen */
+								.my-class {...}
+								
+								/* Pseudo-Klassen */
+								div:hover {...}
+								
+								/* Attribute */
+								div[my-attribut="abc"] {...}
+								
+								/* Kombinationen */
+								div.my-class#my-id {...}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Variablen</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								html {
+									--my-background-color: #abcdef;
+								}
+								
+								html div {
+									background-color: var(--my-background-color, white);
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Das <code>display</code>-Attribut</h3>
+					</section>
+					<section>
+						<p>block</p>
+						<img data-src="/assets/images/css-display-block.svg">
+						<ul>
+							<li>untereinander angeordnet</li>
+							<li>nehmen sich die volle Breite</li>
+							<li><code>width</code> und <code>height</code> möglich</li>
+						</ul>
+					</section>
+					<section>
+						<p>inline</p>
+						<img data-src="/assets/images/css-display-inline.svg">
+						<ul>
+							<li>Standard bei <code>Custom Elements</code></li>
+							<li>nur so groß wie der content</li>
+							<li><code>width</code> und <code>height</code> nicht möglich</li>
+							<li>nebeneinander angeordnet</li>
+						</ul>
+					</section>
+					<section>
+						<p>inline-block</p>
+						<img data-src="/assets/images/css-display-inline-block.svg">
+						<ul>
+							<li>Mischform von <code>block</code> und <code>inline</code></li>
+							<li>nur so groß wie der content</li>
+							<li><code>width</code> und <code>height</code> möglich</li>
+							<li>nebeneinander angeordnet</li>
+						</ul>
+					</section>
+					<section>
+						<p>none</p>
+						<img data-src="/assets/images/css-display-none.svg">
+						<ul>
+							<li>unsichtbar</li>
+							<li>Platz wird nicht länger beansprucht, so als wenn das Element nicht im DOM wäre</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Das <code>position</code>-Attribut</h3>
+					</section>
+					<section>
+						<p>static</p>
+						<img data-src="/assets/images/css-position-static.svg">
+						<ul>
+							<li>Standard</li>
+							<li>Element wird am Ort der Verankerung im HTML dargestellt</li>
+						</ul>
+					</section>
+					<section>
+						<p>relative</p>
+						<img data-src="/assets/images/css-position-relative.svg">
+						<ul>
+							<li>Verschiebung zur eigentlichen <code>static</code>-Position, z.B. mittels <code>left: 20px</code></li>
+						</ul>
+					</section>
+					<section>
+						<p>absolut</p>
+						<img data-src="/assets/images/css-position-absolute.svg">
+						<ul>
+							<li>relative Verschiebung zum nächsten nicht-<code>static</code>-Parent (sonst <code>window</code>)</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Aufgabe</h3>
+						<p>Implementiere folgendes Beispiel-Menü</p>
+						<iframe data-src="/assets/html/css-menu.html"></iframe>
+					</section>
+					<section>
+						<h3>Lösung</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								.menu-item {
+									display: inline-block;
+
+									position: relative;
+								}
+
+								.menu-item .children {
+									display: none;
+
+									position: absolute;
+								}
+
+								.menu-item:hover .children {
+									display: block;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="html" data-trim data-line-numbers>
+								<script type="text/template">
+									<div class="menu">
+										<div class="menu-item">Eins</div>
+										<div class="menu-item">
+											Hover Me!
+											<div class="children">
+												<div>Item 1</div>
+												<div>Item 2</div>
+											</div>
+										</div>
+										<div class="menu-item">Drei</div>
+									</div>
+								</script>
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Viewport</h3>
+						<pre>
+							<code class="html" data-trim data-line-numbers>
+								&lt;!DOCTYPE html>
+								&lt;html>
+									&lt;head>
+										&lt;meta charset="utf-8">&lt;/meta>
+										&lt;meta
+											name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"
+										>
+									&lt;/head>
+									&lt;body>
+										...
+									&lt;/body>
+								&lt;/html>
+							</code>
+						</pre>
+						<p>Ein Muss für alle responsiven Seiten</p>
+					</section>
+					<section>
+						<pre>
+							<code class="bash" data-trim data-line-numbers="">
+								npm install -g http-server
+								cd pfad/zum/projekt
+								http-server --port 8080
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Einheiten</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers="">
+								div {
+									width: 1px; /* Pixel */
+									width: 1pt; /* Points */
+									width: 1em; /* Breite des "M" in der Schriftgröße des Elements */
+									width: 1rem; /* Breite des "M" in der Schriftgröße des HTML-Elements */
+									width: 1vw; /* Prozent der View Width */
+									width: 1%; /* Prozent des Elternelements */
+									
+									width: 5fr; /* Fraction (nur im CSS Grid verfügbar) */
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Aufgabe</h3>
+						<p>Größeneinheiten in einer HTML-Datei ausprobieren</p>
+					</section>
+					<section>
+						<h3>CSS Flexbox</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers="">
+								.container {
+									display: flex; /* soll ein flexibler Container sein */
+									display: inline-flex;
+								
+									flex-direction: column; /* Kinder spaltenweise anordnen */
+									flex-direction: row; /* Kinder zeilenweise anordnen */
+								
+									align-items: center;
+									justify-content: center;
+								
+									gap: 20px; /* Abstände zwischen den Achsen */
+								}
+								
+								.child {
+									flex-grow: 1; /* Anteiliger Platz, wenn mehr als nötig da ist */
+									flex-shrink: 1; /* Anteiliger Platz, wenn weniger als nötig da ist */
+									flex-basis: 20px; /* Grundlage zur Berechnung der finalen Größe */
+									order: 1; /* Erlaubt die Darstellung in anderer Reihenfolge als durch das HTML vorgegeben */
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<img data-src="/assets/images/css-flexbox-axes.drawio.svg">
+					</section>
+					<section>
+						<h3>Aufgabe</h3>
+						<p>Mit CSS Flexbox rumspielen</p>
+					</section>
+					<section>
+						<h3>CSS Grid</h3>
+					</section>
+					<section>
+						<h3>Terminologie</h3>
+						<img data-src="/assets/images/css-grid-terminology.drawio.svg">
+					</section>
+					<section>
+						<pre>
+							<code class="css" data-trim data-line-numbers="">
+								.grid {
+									display: grid; /* inline-grid; */
+					
+									grid-template-columns: 1fr 1fr 1fr;
+									grid-template-rows: 1fr 1fr;
+									
+									gap: 5px 10px;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="html" data-trim data-line-numbers="">
+								&lt;div class="grid"&gt;
+									&lt;span&gt;A&lt;/span&gt;
+									&lt;span&gt;B&lt;/span&gt;
+									&lt;span&gt;C&lt;/span&gt;
+									&lt;span&gt;D&lt;/span&gt;
+									&lt;span&gt;E&lt;/span&gt;
+									&lt;span&gt;F&lt;/span&gt;
+								&lt;/div&gt;
+							</code>
+						</pre>
+					</section>
+					<section>
+						<iframe data-src="/assets/html/css-grid-example-1.html"></iframe>
+					</section>
+					<section>
+						<pre>
+							<code class="css" data-trim data-line-numbers="">
+								.grid {
+									grid-template-columns: [left] 1fr [column1] 1fr [column2] 1fr [right];
+									grid-template-rows: [top] 1fr [row1] 1fr [bottom];
+								}
+								
+								.a {
+									grid-column: 2 / span 2;
+									grid-row: 1;
+								}
+								
+								.b {
+									grid-column: left / column2;
+									grid-row: 2;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="html" data-trim data-line-numbers="">
+								&lt;div class="grid"&gt;
+									&lt;span class="a"&gt;A&lt;/span&gt;
+									&lt;span class="b"&gt;B&lt;/span&gt;
+								&lt;/div&gt;
+							</code>
+						</pre>
+					</section>
+					<section>
+						<iframe data-src="/assets/html/css-grid-example-2.html"></iframe>
+					</section>
+					<section>
+						<pre>
+							<code class="css" data-trim data-line-numbers="">
+								.grid {
+									grid-template-areas:
+										"header header header"
+										"content content content";
+								}
+					
+								.a {
+									grid-area: header;
+								}
+					
+								.b {
+									grid-area: 2 / 1 / 2 / 3; /* start-row / start-column / end-row / end-column */
+										/* alternativ auch Namen der Lines möglich */
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<iframe data-src="/assets/html/css-grid-example-3.html"></iframe>
+					</section>
+					<section>
+						<h3>Aufgabe</h3>
+						<p>Implementiere folgendes Design:</p>
+						<iframe data-src="/assets/html/css-grid-excercise.html"></iframe>
+					</section>
+					<section>
+						<h3>Lösung</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers="">
+								.grid {
+									display: grid;
+									
+									grid-template-rows: 1fr 5fr 1fr;
+									
+									gap: 2px;
+					
+									grid-template-areas:
+										"navigation header header header"
+										"navigation content content content"
+										"footer footer footer footer"
+								}
+					
+								.navigation {
+									grid-area: navigation;
+								}
+					
+								.header {
+									grid-area: header;
+								}
+					
+								.content {
+									grid-area: content;
+								}
+					
+								.footer {
+									grid-area: footer;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="html" data-trim data-line-numbers="">
+								&lt;div class="grid"&gt;
+									&lt;div class="area navigation"&gt;Navigation&lt;/div&gt;
+									&lt;div class="area header"&gt;Header&lt;/div&gt;
+									&lt;div class="area content"&gt;Content&lt;/div&gt;
+									&lt;div class="area footer"&gt;Footer&lt;/div&gt;
+								&lt;/div&gt;
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h4>Platzierug des Inhalts</h4>
+						<pre>
+							<code class="css" data-trim data-line-numbers="">
+								.grid {
+									align-items: center;
+									justify-items: center;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<iframe data-src="/assets/html/css-grid-example-4.html"></iframe>
+					</section>
+					<section>
+						<h3>Media Queries</h3>
+						<ul>
+							<li>"Medienabfragen"</li>
+							<li>Styles auf Basis von Eigenschaften des Ausgabemediums</li>
+							<li>Große Bildschirme, kleine Bildschirme, Printmedien...</li>
+							<li>Hinweis: Sollten immer als letztes (unten) in einem Stylesheet sein</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Syntax</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								@media screen and (min-width: 640px) and (max-width: 1024px) {
+									.navigation {
+										display: none;
+									}
+								}
+							</code>
+						</pre>
+						<p>Bedeutung: Wenn die Seite auf einem Display angezeigt wird, welches zwischen 640px und 1024px in der Breite anzeigen kann, dann blende die Navigation aus</p>
+					</section>
+					<section>
+						<h3>Werte für die Ausgabemedien (optional, Standard ist "all")</h3>
+						<ul>
+							<li>all</li>
+							<li>screen</li>
+							<li>print</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Werte für die Eigenschaften mit Typ und Erklärung (kleiner Auszug)</h3>
+						<ul>
+							<li>width (Number, Breite)</li>
+							<li>height (Number, Höhe)</li>
+							<li>orientation (portrait | landscape, Quer- oder Hochformat)</li>
+							<li>hover (none | hover, Hat Zeiger zum Hovern)</li>
+							<li>forced-colors (none | active, erzwungene Farbpalette z.B. bei Sehbehinderung)</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Aufgabe</h3>
+						<p>Entwerfe eine kleine Seite mit @media und zeige ein beliebiges Element ab einer bestimmten Höhe oder Breite an (die Größe des Displays kann dynamisch mit den Entwicklertools im Gerätesimulator geändert werden)</p>
+					</section>
+					<section>
+						<h3>Aufgabe</h3>
+						<p>Passe die Vorlage "media-queries-responsive-layout.html" mit @media-Queries so an, dass das Menü links ab einer maximalen Breite von 480 Pixel und kleiner nach links oben in die Ecke minimiert wird und nur per Hover wieder 50% Breite und 100% Höhe bekommt</p>
+					</section>
+					<section>
+						<img data-src="/assets/images/media-queries-excercise.png">
+					</section>
+					<section>
+						<h3>Lösung</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								@media screen and (max-width: 480px) {
+									.menu {
+										grid-area: unset;
+					
+										position: absolute;
+									}
+									
+									.menu:hover {
+										height: 100%;
+										width: 50%;
+									}
+					
+									.grid {
+										grid-template-columns: 0fr 5fr;
+									}
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Transform</h3>
+						<ul>
+							<li>rein optisch, d.h. "physische" Größe bleibt erhalten</li>
+							<li>eine Art "Shader" auf Grafikebene</li>
+							<li>Effekte wie Drehung, Vergrößerung, Verschiebung usw.</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Syntax</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								.foo {
+									transform: translateX(20px) translateY(20px);
+									transform-origin: left;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Mögliche Effekte</h3>
+						<ul>
+							<li>translate</li>
+							<li>rotate</li>
+							<li>scale</li>
+							<li>scew</li>
+						</ul>
+						<p>Die meisten besitzen zusätzlich spezifischere X-, Y- oder 3D-Versionen</p>
+					</section>
+					<section>
+						<h3>Aufgabe</h3>
+						<p>Probiere die genannten Transform-Effekte in einer beliebigen Seite aus</p>
+					</section>
+					<section>
+						<h3>Transition</h3>
+						<ul>
+							<li>Elemente können "weich" verändert werden</li>
+							<li>Mögliche Attribute, deren Änderungen animiert werden können sind z.B. <code>width</code>, <code>height</code>, <code>transform</code>, <code>color</code> und viele weitere</li>
+							<li>Das Attribut <code>display</code> lässt sich jedoch nicht animieren</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Syntax</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								.foo {
+									width: 100%;
+									background-color: red;
+									/* transition: [Attribut] [Dauer] [Zeitfunktion] */
+									transition: width 1s ease-out;
+								}
+					
+								.foo:hover {
+									width: 50%;
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Beispiel</h3>
+						<iframe data-src="/assets/html/css-transition.html"></iframe>
+					</section>
+					<section>
+						<h3>Animation</h3>
+						<ul>
+							<li>Es können zusätzlich eigene Animationen entworfen werden</li>
+							<li>Definition per <code>Keyframes</code></li>
+						</ul>
+					</section>
+					<section>
+						<h3>Syntax</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								.foo {
+								  animation-duration: 3s;
+								  animation-name: slidein;
+								}
+								
+								@keyframes slidein {
+								  from {
+									margin-left: 100%;
+									width: 300%;
+								  }
+								
+								  to {
+									margin-left: 0%;
+									width: 100%;
+								  }
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Alternative Syntax</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								.foo {
+								  /* ... */
+								}
+								
+								@keyframes slidein {
+								  1% {
+									margin-left: 100%;
+								  }
+								
+								  100% {
+									margin-left: 0%;
+								  }
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Beispiel</h3>
+						<iframe data-src="/assets/html/css-animation.html"></iframe>
+					</section>
+					<section>
+						<h3>3D Transform</h3>
+						<ul>
+							<li>Neben den gewohnten X- und Y-Achsen (Breite und Höhe) gibt es auch noch die Z-Achse</li>
+							<li>Bewegung entlang der Sichtachse, d.h. zum bzw. vom Betrachter weg</li>
+							<li>Perspektivische Effekte möglich</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Beispiel</h3>
+						<iframe data-src="/assets/html/css-transform-3d.html"></iframe>
+					</section>
+					<section>
+						<h3>Bedingungen / Optionen</h3>
+						<pre>
+							<code class="css" data-trim data-line-numbers>
+								.container {
+									perspective: 1000px; /* "Entfernung" des Betrachters */
+								
+									transform-style: preserve-3d; /* oder "flat" */
+								}
+								
+								.element {
+									backface-visibility: hidden; /* oder "visible" */
+								}
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Beispiel</h3>
+						<iframe data-src="/assets/html/css-transform-3d-cube.html"></iframe>
+					</section>
+					<section>
+						<h3>Aufgabe</h3>
+						<p>Implementiere einen drehenden Würfel (Vorlage "templates/008-css/css-3d-cube.html")</p>
+					</section>
+				</section>
+				<section>
+					<section>
+						<h2>Web Components</h2>
+					</section>
+					<section>
+						<p>Was sind Web Components?</p>
+						<img data-src="/assets/images/web-components.svg">
+					</section>
+					<section>
+						<p>Vorteile</p>
+						<ul>
+							<li>Entwicklung eigener HTML-Elemente, welche sich nahtlos neben nativen Elementen nutzen lassen</li>
+							<li>Hohe Wiederverwendbarkeit in mehreren Projekten</li>
+							<li>Keine Libraries oder Frameworks notwendig, um eigene Elemente zu entwickeln</li>
+							<li>Kapselung des Scopes sowohl von JS (Variablen...) als auch CSS (id, class...)</li>
+						</ul>
+					</section>
+					<section>
+						<h3>Ansätze in der Vergangenheit und Alternativen heute</h3>
+					</section>
+					<section>
+						<h4>jQuery</h4>
+						<a href="https://api.jqueryui.com/accordion/#entry-examples" target="_blank">https://api.jqueryui.com/accordion/#entry-examples</a>
+					</section>
+					<section>
+						<pre>
+							<code class="html" data-trim data-line-numbers>
+								<script type="text/template">
+									<div id="accordion" class="ui-accordion ui-widget ui-helper-reset" role="tablist">
+										<h3 class="ui-accordion-header ui-corner-top ui-state-default ui-accordion-icons ui-accordion-header-active ui-state-active" role="tab" id="ui-id-1" aria-controls="ui-id-2" aria-selected="true" aria-expanded="true" tabindex="0">
+											<span class="ui-accordion-header-icon ui-icon ui-icon-triangle-1-s"></span>Section 1</h3>
+										<div class="ui-accordion-content ui-corner-bottom ui-helper-reset ui-widget-content ui-accordion-content-active" id="ui-id-2" aria-labelledby="ui-id-1" role="tabpanel" aria-hidden="false" style="display: block; height: 166.8px;">
+											<p>Mauris mauris ante, blandit et, ultrices a, suscipit eget.
+												Integer ut neque. Vivamus nisi metus, molestie vel, gravida in,
+												condimentum sit amet, nunc. Nam a nibh. Donec suscipit eros.
+												Nam mi. Proin viverra leo ut odio.</p>
+										</div>
+										<h3 class="ui-accordion-header ui-corner-top ui-state-default ui-accordion-icons ui-accordion-header-collapsed ui-corner-all" role="tab" id="ui-id-3" aria-controls="ui-id-4" aria-selected="false" aria-expanded="false" tabindex="-1"><span class="ui-accordion-header-icon ui-icon ui-icon-triangle-1-e"></span>Section 2</h3>
+										<div class="ui-accordion-content ui-corner-bottom ui-helper-reset ui-widget-content" id="ui-id-4" aria-labelledby="ui-id-3" role="tabpanel" aria-hidden="true" style="display: none; height: 166.8px;">
+											<p>Sed non urna. Phasellus eu ligula. Vestibulum sit amet purus.
+												Vivamus hendrerit, dolor aliquet laoreet, mauris turpis velit,
+												faucibus interdum tellus libero ac justo.</p>
+										</div>
+										<h3 class="ui-accordion-header ui-corner-top ui-state-default ui-accordion-icons ui-accordion-header-collapsed ui-corner-all" role="tab" id="ui-id-5" aria-controls="ui-id-6" aria-selected="false" aria-expanded="false" tabindex="-1"><span class="ui-accordion-header-icon ui-icon ui-icon-triangle-1-e"></span>Section 3</h3>
+										<div class="ui-accordion-content ui-corner-bottom ui-helper-reset ui-widget-content" id="ui-id-6" aria-labelledby="ui-id-5" role="tabpanel" aria-hidden="true" style="display: none; height: 166.8px;">
+											<p>Nam enim risus, molestie et, porta ac, aliquam ac, risus.
+												Quisque lobortis.Phasellus pellentesque purus in massa.</p>
+											<ul>
+												<li>List item one</li>
+												<li>List item two</li>
+												<li>List item three</li>
+											</ul>
+										</div>
+									</div>
+								</script>
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h4>angular</h4>
+						<img data-src="/assets/images/web-components-angular.png">
+					</section>
+					<section>
+						<pre>
+							<code class="html" data-trim data-line-numbers>
+								<script type="text/template">
+									<app-root _nghost-ng-c3715250071="" ng-version="17.0.0"><app-top-bar _ngcontent-ng-c3715250071="" _nghost-ng-c3918259376=""><a _ngcontent-ng-c3918259376="" routerlink="/" ng-reflect-router-link="/" href="/"><h1 _ngcontent-ng-c3918259376="">My Store</h1></a><a _ngcontent-ng-c3918259376="" routerlink="/cart" class="button fancy-button" ng-reflect-router-link="/cart" href="/cart"><em _ngcontent-ng-c3918259376="" class="material-icons">shopping_cart</em>Checkout
+										</a></app-top-bar><div _ngcontent-ng-c3715250071="" class="container"><router-outlet _ngcontent-ng-c3715250071=""></router-outlet><app-product-list _nghost-ng-c2837874410=""><h2 _ngcontent-ng-c2837874410="">Products</h2><div _ngcontent-ng-c2837874410=""><h3 _ngcontent-ng-c2837874410=""><a _ngcontent-ng-c2837874410="" title="Phone XL details" ng-reflect-router-link="/products,1" href="/products/1"> Phone XL </a></h3><p _ngcontent-ng-c2837874410=""> Description: A large phone with one of the best screens </p><!--bindings={
+										  "ng-reflect-ng-if": "A large phone with one of the "
+										}--><button _ngcontent-ng-c2837874410="" type="button"> Share </button><app-product-alerts _ngcontent-ng-c2837874410="" _nghost-ng-c869072018="" ng-reflect-product="[object Object]"><p _ngcontent-ng-c869072018=""><button _ngcontent-ng-c869072018="" type="button">Notify Me</button></p><!--bindings={
+										  "ng-reflect-ng-if": "true"
+										}--></app-product-alerts></div><div _ngcontent-ng-c2837874410=""><h3 _ngcontent-ng-c2837874410=""><a _ngcontent-ng-c2837874410="" title="Phone Mini details" ng-reflect-router-link="/products,2" href="/products/2"> Phone Mini </a></h3><p _ngcontent-ng-c2837874410=""> Description: A great phone with one of the best cameras </p><!--bindings={
+										  "ng-reflect-ng-if": "A great phone with one of the "
+										}--><button _ngcontent-ng-c2837874410="" type="button"> Share </button><app-product-alerts _ngcontent-ng-c2837874410="" _nghost-ng-c869072018="" ng-reflect-product="[object Object]"><!--bindings={
+										  "ng-reflect-ng-if": "false"
+										}--></app-product-alerts></div><div _ngcontent-ng-c2837874410=""><h3 _ngcontent-ng-c2837874410=""><a _ngcontent-ng-c2837874410="" title="Phone Standard details" ng-reflect-router-link="/products,3" href="/products/3"> Phone Standard </a></h3><!--bindings={
+										  "ng-reflect-ng-if": ""
+										}--><button _ngcontent-ng-c2837874410="" type="button"> Share </button><app-product-alerts _ngcontent-ng-c2837874410="" _nghost-ng-c869072018="" ng-reflect-product="[object Object]"><!--bindings={
+										  "ng-reflect-ng-if": "false"
+										}--></app-product-alerts></div><!--bindings={
+										  "ng-reflect-ng-for-of": "[object Object],[object Object"
+										}--></app-product-list><!--container--></div>
+									</app-root>
+								</script>
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Aufbau einer Web Component</h3>
+						<pre>
+							<code class="html" data-trim data-line-numbers>
+								<script type="text/template">
+									<!--
+										Hinweis: Der Name bzw. der Selektor muss immer einen Bindestrich enthalten,
+										damit keine Namens-Kollisionen mit nativen HTML-Tags entstehen können
+									-->
+									<hello-world></hello-world>
+								</script>
+							</code>
+						</pre>
+					</section>
+					<section>
+						<pre>
+							<code class="js" data-trim data-line-numbers="1-16|19">
+								<script type="text/template">
+									class HelloWorldComponent extends HTMLElement {
+										constructor() {
+											super();
+									
+											const shadowRoot = this.attachShadow({mode: "open"});
+										
+											shadowRoot.innerHTML = `
+												<style>
+													div {
+														background-color: coral;
+														color: white;
+													}
+												</style>
+												<div>Hello World!</div>
+											`;
+										}
+									}
+									
+									window.customElements.define("hello-world", HelloWorldComponent);
+								</script>
+							</code>
+						</pre>
+					</section>
+					<section>
+						<iframe data-src="/assets/html/hello-world.html"></iframe>
+					</section>
+					<section>
+						<h4>Light DOM vs Shadow DOM</h4>
+						<img data-src="/assets/images/web-components-shadow-root.png" width="500px">
+					</section>
+					<section>
+						<h4>Suche von Elementen im Light- und Shadow DOM</h4>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								<script type="text/template">
+									// Light DOM
+									const span = document.querySelector("span"); // Hi!
+									const divs = document.querySelectorAll("div");
+									
+									console.log(divs.length); // => 1
+									
+									// Shadow DOM
+									const helloWorld = document.querySelector("hello-world");
+									
+									helloWorld.shadowRoot.querySelector("div"); // Hello World!
+								</script>
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Auf Attribute reagieren</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers="2|8-10">
+								<script type="text/template">
+									class HelloWorldComponent extends HTMLElement {
+										static observedAttributes = ["my-attribute"];
+									
+										constructor() {
+											// ...
+										}
+									
+										attributeChangedCallback(name, oldValue, newValue) {
+											console.log(`${name}: changed from ${oldValue} to ${newValue}`);
+										}
+									}
+								</script>
+							</code>
+						</pre>
+					</section>
+					<section>
+						<h3>Aufgabe</h3>
+						<p>Lasse die eigene Komponente "hello-sayer" auf eine Änderung des "name"-Attributs reagieren, indem der dort eingetragene Name in der Komponente angezeigt wird (Beispiel: name="Joe" => Hello Joe!)</p>
+						<p>(/examples/templates/web-components/hello-sayer.html)</p>
+					</section>
+					<section>
+						<h3>Musterlösung</h3>
+						<pre>
+							<code class="js" data-trim data-line-numbers>
+								<script type="text/template">
+									class HelloSayerComponent extends HTMLElement {
+										static observedAttributes = ["name"];
+									
+										constructor() {
+											super();
+									
+											this.root = this.attachShadow({mode: "open"});
+									
+											this.root.innerHTML = `
+												<style>
+													div {
+														background-color: coral;
+														color: white;
+													}
+												</style>
+												<div>Hello!</div>
+											`;
+										}
+									
+										attributeChangedCallback(name, oldValue, newValue) {
+											this.root.querySelector("div").innerHTML = `Hello ${newValue}!`;
+										}
+									}
+									
+									window.customElements.define("hello-sayer", HelloSayerComponent);
+									
+									const names = ["Joe", "Allie"];
+									let counter = 0;
+									
+									setInterval(() => document.querySelector("hello-sayer").setAttribute("name", names[counter++ % 2]), 2000);
+								</script>
+							</code>
+						</pre>
+					</section>
+					<section>
+						<iframe data-src="/assets/html/hello-sayer.html"></iframe>
+					</section>
 				</section>
 			</div>
 		</div>
@@ -1415,7 +3688,7 @@
 				hash: true,
 				slideNumber: "c/t",
 				transition: "fade",
-
+				
 				// Learn about plugins: https://revealjs.com/plugins/
 				plugins: [ RevealMarkdown, RevealHighlight, RevealNotes ]
 			});

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