From c23799c63bc96a26f277f4d734abedc528f1306e Mon Sep 17 00:00:00 2001
From: Sascha Schulz <sschulz@dh-software.de>
Date: Mi, 05 Apr 2023 17:24:16 +0200
Subject: [PATCH] merge draft
---
index.html | 493 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 492 insertions(+), 1 deletions(-)
diff --git a/index.html b/index.html
index d8c9910..8207769 100644
--- a/index.html
+++ b/index.html
@@ -27,14 +27,15 @@
<h3>Grundlagen</h3>
<ul>
<li>HTML/CSS/JS</li>
- <li>JSON</li>
<li>HTTP-Protokoll</li>
+ <li>JSON</li>
<li>Debugger</li>
</ul>
</section>
<section>
<h3>Fortgeschrittenes</h3>
<ul>
+ <li>JavaScript</li>
<li>NodeJS</li>
<li>Responsive Design</li>
<li>CSS-Animationen</li>
@@ -267,7 +268,9 @@
#my-id /* ID */
html, body /* Mehrfachselektion */
div > p /* p die direkt unterhalb eines div sind */
+ div p /* p die irgendwo unterhalb eines div sind */
a:visited /* besuchte Links */
+ div:hover /* divs über die man mit der Maus fährt */
span.important /* span mit der Klasse "important" */
</code>
</pre>
@@ -324,6 +327,28 @@
display: inline-block;
width: 20px;
height: 20px;
+ </code>
+ </pre>
+ </section>
+ <section>
+ <h3>Spezifität</h3>
+ <p>Regeln können andere Regeln überschreiben</p>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <script type="text/template">
+ <div style="display: inline-block"></div>
+ </script>
+ </code>
+ </pre>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ #id:hover { display: none }
+
+ #id { display: block }
+
+ .class.clazz { display: inline }
+
+ div { display: inline-block }
</code>
</pre>
</section>
@@ -404,6 +429,472 @@
</code>
</pre>
</section>
+ <section>
+ <h3>Beispiel Menü</h3>
+ <iframe data-src="/assets/html/css-menu.html"></iframe>
+ </section>
+ <section>
+ <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>
+ <section>
+ <section>
+ <h2>JS</h2>
+ </section>
+ <section>
+ <ul>
+ <li>JavaScript stammt aus dem Jahr 1995 von Netscape</li>
+ <li>Syntaktisch an Java angelehnt</li>
+ <li>Ursprünglich nur optionale, verzichtbare Effekte (unobstrusive)</li>
+ <li>Mittlerweile von ECMA standardisiert</li>
+ </ul>
+ </section>
+ <section>
+ <table>
+ <tr><th>Version</th><th>ECMA Standard</th><th>Jahr</th></tr>
+ <tr><td>ES1</td><td>ECMAScript 1</td><td>1997</td></tr>
+ <tr><td>ES2</td><td>ECMAScript 2</td><td>1998</td></tr>
+ <tr><td><strong>ES3</strong></td><td><strong>ECMAScript 3</strong></td><td><strong>1999</strong></td></tr>
+ <tr><td><strong>ES5</strong></td><td><strong>ECMAScript 5</strong></td><td><strong>2009</strong></td></tr>
+ <tr><td>ES6</td><td>ECMAScript 2015</td><td>2015</td></tr>
+ <tr><td></td><td>...</td><td></td></tr>
+ <tr><td></td><td>ECMAScript 2020</td><td>2020</td></tr>
+ </table>
+ </section>
+ <section>
+ <p>Code wird zwischen <code>script</code>-Tags geschrieben</p>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <!DOCTYPE html>
+ <html lang="de">
+ <head>
+ <meta charset="UTF-8">
+ </head>
+ <body>
+ <script>// code</script>
+ </body>
+ </html>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>DOM-API</p>
+ <pre>
+ <code class="js" data-trim data-line-numbers>
+ // findet das erste Element
+ const parent = document.querySelector("#id");
+
+ // findet alle Elemente
+ const elements = document.querySelectorAll("#id");
+
+ // Element erstellen
+ const newElement = document.createElement("div");
+
+ newElement.addEventListener("click", (event) => {
+ // Click-Event
+ });
+
+ // Element anhängen
+ parent.appendChild(newElement);
+
+ newElement.remove();
+ </code>
+ </pre>
+ </section>
+ </section>
+ <section>
+ <section>
+ <h2>Auslagern in verschiedene Dateien</h2>
+ </section>
+ <section>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <!DOCTYPE html>
+ <html>
+ <head>
+ <!-- CSS -->
+ <link href="styles.css" rel="stylesheet">
+ </head>
+ <body>
+ <!-- JS -->
+ <script src="index.js"></script>
+ </body>
+ </html>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Parsen eines HTML-Dokuments</p>
+ <pre>
+ <code class="html" data-trim data-line-numbers="1|2|3|4|5|6|7|8|9|10">
+ <script type="text/template">
+ <!DOCTYPE html>
+ <html lang="de">
+ <head>
+ <meta charset="UTF-8">
+ <title>Coole Seite 😀</title>
+ </head>
+ <body>
+ <div>Ganz langer Text</div>
+ </body>
+ </html>
+ </script>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Verschiedene Varianten, JavaScript erst am Ende auszuführen</p>
+ <p>Damals mit jQuery:</p>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <!DOCTYPE html>
+ <html>
+ <head>
+ <script>
+ $(document).ready((event) => {
+ const element = document.querySelector("#hello");
+ });
+ </script>
+ </head>
+ <body>
+ <div id="hello">Hello World!</div>
+ </body>
+ </html>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p><code>script</code>-Tag am Ende</p>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <!DOCTYPE html>
+ <html>
+ <head>
+ </head>
+ <body>
+ <div>Hello World!</div>
+ ...
+ <script src="index.js"></script>
+ </body>
+ </html>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Event-basiert, z.B. per DOMContentLoaded</p>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <!DOCTYPE html>
+ <html>
+ <head>
+ <script>
+ document.addEventListener("DOMContentLoaded", (event) => {
+ // wird ausgeführt, sobald das Dokument geparst wurde
+ const element = document.querySelector("#hello");
+ });
+ </script>
+ </head>
+ <body>
+ <div id="hello">Hello World!</div>
+ </body>
+ </html>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Moderne Variante</p>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <script src="index.js" defer></script>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <h2><code>document</code>-Operationen</h2>
+ <pre>
+ <code class="js" data-trim data-line-numbers>
+ document.open();
+ document.write("<div>Booo!</div>");
+ document.close();
+ </code>
+ </pre>
+ </section>
+ <section>
+ <a href="https://developer.mozilla.org/en-US/docs/Web/API/Document/write">
+ <img data-src="/assets/images/document.write.jpg">
+ </a>
+ </section>
+ <section>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <body>
+ <script>document.write("<p>Dies ist ein Text.</p>")</script>
+ <button>Dunkle Magie</button>
+ <script>
+ const button = document.querySelector("button");
+
+ button.addEventListener("click", () => {
+ document.write("Und pfutsch!");
+ });
+ </script>
+ </body>
+ </code>
+ </pre>
+ </section>
+ </section>
+ <section>
+ <section>
+ <h2>HTTP-Protokoll</h2>
+ </section>
+ <section>
+ <img data-src="/assets/images/osi-model.jpg">
+ </section>
+ <section>
+ <ul>
+ <li>OSI-Schichten 5, 6 und 7</li>
+ <li>Anfrage-Antwort-Prinzip</li>
+ <li>Basiert auf einfachem Text</li>
+ </ul>
+ </section>
+ <section>
+ <table>
+ <tr><th>Version</th><th>Jahr</th></tr>
+ <tr><th>0.9</th><th>1991</th></tr>
+ <tr><th>1.0</th><th>1996</th></tr>
+ <tr><th>1.1</th><th>1999</th></tr>
+ <tr><th>2.0</th><th>2015</th></tr>
+ <tr><th>3.0</th><th>2022</th></tr>
+ </table>
+ </section>
+ <section>
+ <p>Request an www.google.de</p>
+ <pre>
+ <code class="http" data-trim data-line-numbers>
+ GET / HTTP/1.1
+ Host: www.google.de
+ User-Agent: curl/7.88.1
+ Accept: */*
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Response von www.google.de</p>
+ <pre>
+ <code class="http" data-trim data-line-numbers>
+ HTTP/1.1 200 OK
+ Date: Tue, 04 Apr 2023 15:45:26 GMT
+ Expires: -1
+ Cache-Control: private, max-age=0
+ Content-Type: text/html; charset=ISO-8859-1
+ Content-Security-Policy-Report-Only: [...]
+ Server: gws
+ X-XSS-Protection: 0
+ X-Frame-Options: SAMEORIGIN
+ Set-Cookie: [...]
+ Accept-Ranges: none
+ Vary: Accept-Encoding
+ Transfer-Encoding: chunked
+
+ <!doctype html><html>...</html>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Einfach mal testen:</p>
+ <pre>
+ <code class="bash" data-trim data-line-numbers>
+ curl -v --http1.0 http://www.google.de
+ curl -v --http1.1 http://www.google.de
+ curl -v --http2 http://www.google.de
+ curl -v --http2-prior-knowledge http://www.google.de
+ curl -v --http3 http://www.google.de
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Verschiedene "Verben" bzw. "Methoden"</p>
+ <ul>
+ <li>GET</li>
+ <li>POST</li>
+ <li>PUT</li>
+ <li>PATCH</li>
+ <li>DELETE</li>
+ <li>...</li>
+ </ul>
+ </section>
+ <section>
+ <p>Beispiel:</p>
+ <pre>
+ <code class="bash" data-trim data-line-numbers>
+ git clone https://git.furnco.de/r/public/web-development/examples.git
+ cd examples/templates/005-http-rest
+ node index.js
+ </code>
+ </pre>
+ </section>
+ <section>
+ <pre>
+ <code class="text" data-trim data-line-numbers>
+ curl -X GET -is http://localhost:3000/todo
+ curl -X POST -H "Content-Type: application/json" -d '{"name": "Einkaufen"}' -is http://localhost:3000/todo
+ curl -X POST -H "Content-Type: application/json" -d '{"name": "Putzen"}' -is http://localhost:3000/todo
+ curl -X PUT -H "Content-Type: application/json" -d '{"name": "Schlafen"}' -is http://localhost:3000/todo/1
+ curl -X DELETE -is http://localhost:3000/todo/0
+ </code>
+ </pre>
+ </section>
+ <section>
+ <pre>
+ <code class="text" data-trim data-line-numbers>
+ HTTP/1.1 200 OK
+ X-Powered-By: Express
+ Content-Type: application/json; charset=utf-8
+ Content-Length: 13
+ ETag: W/"d-KMmUcQ1kigqtwzZnU+jVDkYP3Co"
+ Date: Wed, 05 Apr 2023 12:05:05 GMT
+ Connection: keep-alive
+ Keep-Alive: timeout=5
+
+ ["Einkaufen"]
+ </code>
+ </pre>
+ </section>
+ <section>
+ <pre>
+ <code class="js" data-trim data-line-numbers="">
+ app.get("/todo", (req, res) => {
+ return res.json(todos);
+ });
+
+ // [...]
+
+ app.post("/todo", (req, res) => {
+ // [...]
+ return res.json(todos);
+ // [...]
+ });
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p><code>GET</code> und <code>POST</code> auf klassischen Webseiten</p>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <form method="post" action="/todo">
+ <input name="todo"><button>add</button>
+ </form>
+ </code>
+ </pre>
+ <p>Beispiel:</p>
+ <pre>
+ <code class="bash" data-trim data-line-numbers>
+ cd examples/templates/006-http-web
+ node index.js
+ </code>
+ </pre>
+ </section>
+ </section>
+ <section>
+ <section>
+ <h3>JSON</h3>
+ </section>
+ <section>
+ <ul>
+ <li><em class="h">J</em>ava<em class="h">S</em>cript <em class="h">O</em>bject <em class="h">N</em>otation</li>
+ <li>Basiert auf reinem Text</li>
+ <li>Format zur strukturierten Speicherung von Daten</li>
+ <li>Attribute müssen immer in doppelte Anführungsstriche (<code>"</code>) gesetzt werden</li>
+ </ul>
+ </section>
+ <section>
+ <p>Definition eines einfachen Objekts in JS</p>
+ <pre>
+ <code class="js" data-trim data-line-numbers>
+ const o = {
+ x: 1,
+ y: 2
+ };
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Entsprechung in JSON</p>
+ <pre>
+ <code class="js" data-trim data-line-numbers>
+ {
+ "x": 1,
+ "y": 2
+ }
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Mögliche Typen</p>
+ <p>
+ <ul>
+ <li>Number (bzw. Integer / Float)</li>
+ <li>Boolean</li>
+ <li>String</li>
+ <li>Array</li>
+ <li>Object</li>
+ </ul>
+ </p>
+ </section>
+ <section>
+ <p>Der äußere Container kann ein Array oder ein Object sein</p>
+ <pre>
+ <code class="js" data-trim data-line-numbers>
+ {
+ "key": "value",
+ }
+ </code>
+ </pre>
+ <pre>
+ <code class="js" data-trim data-line-numbers>
+ [
+ "foo",
+ "bar"
+ ]
+ </code>
+ </pre>
+ </section>
</section>
</div>
</div>
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