From dfde18fc91d1625fa27acade4907236989a713c6 Mon Sep 17 00:00:00 2001
From: Sascha Schulz <sschulz@dh-software.de>
Date: Di, 14 Feb 2023 16:02:18 +0100
Subject: [PATCH] add css specifity and js intro
---
index.html | 319 +++++++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 298 insertions(+), 21 deletions(-)
diff --git a/index.html b/index.html
index 1e4111c..504d73e 100644
--- a/index.html
+++ b/index.html
@@ -11,7 +11,7 @@
<link rel="stylesheet" href="dist/theme/night-custom.css">
<!-- Theme used for syntax highlighted code -->
- <link rel="stylesheet" href="plugin/highlight/monokai.css">
+ <link rel="stylesheet" href="./node_modules/highlight.js/styles/atom-one-dark-reasonable.css">
</head>
<body>
<div class="reveal">
@@ -116,7 +116,7 @@
<section>
<h3>Grundgerüst</h3>
<pre>
- <code data-trim data-line-numbers>
+ <code class="html" data-trim data-line-numbers>
<script type="text/template">
<!DOCTYPE html>
<html lang="de">
@@ -133,7 +133,7 @@
<section>
<h3>Beispiel</h3>
<pre>
- <code data-trim data-line-numbers>
+ <code class="html" data-trim data-line-numbers>
<script type="text/template">
<!DOCTYPE html>
<html lang="en">
@@ -160,16 +160,24 @@
<section>
<h3>Aufbau eines Elements</h3>
<pre>
- <code data-trim data-line-numbers>
+ <code class="html" data-trim>
<script type="text/template">
<span id="my-id" class="super important">Inhalt</span>
</script>
</code>
</pre>
<pre>
- <code data-trim data-line-numbers>
+ <code class="html" data-trim>
<script type="text/template">
- <input id="input" class="super important" disabled="disabled"/>
+ <!-- HTML 4.01 -->
+ <input id="input" class="super important" disabled="disabled" />
+ </script>
+ </code>
+ </pre>
+ <pre>
+ <code class="html" data-trim>
+ <script type="text/template">
+ <!-- HTML 5 -->
<input id="input2" class="super important" disabled>
</script>
</code>
@@ -193,32 +201,28 @@
<section>
<h3>Beispiel</h3>
<pre>
- <code data-trim data-line-numbers>
- <script type="text/template">
- selector [, selector, selector, ...] {
- property: value;
- }
- </script>
+ <code class="css" data-trim data-line-numbers>
+ selector [, selector, selector, ...] {
+ property: value;
+ }
</code>
</pre>
</section>
<section>
<h3>Beispiel</h3>
<pre>
- <code data-trim data-line-numbers>
- <script type="text/template">
- html {
- background-color: red;
- font-size: 30px;
- }
- </script>
+ <code class="css" data-trim data-line-numbers>
+ html {
+ background-color: red;
+ font-size: 30px;
+ }
</code>
</pre>
</section>
<section>
<h3>Beispiel</h3>
<pre>
- <code data-trim data-line-numbers>
+ <code class="html" data-trim data-line-numbers>
<script type="text/template">
<html lang="en">
<head>
@@ -259,15 +263,288 @@
<section>
<h3>Selektoren</h3>
<pre>
- <code data-trim data-line-numbers>
+ <code class="css" data-trim data-line-numbers>
#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>
</section>
+ <section>
+ <h3>Layout</h3>
+ <p>Es gibt zwei grundlegende Blocktypen:</p>
+ <p><code>block</code></p>
+ <p><code>inline</code></p>
+ </section>
+ <section>
+ <h3>Block</h3>
+ <p>Beansprucht eine ganze Zeile und verursacht Zeilenumbrüche</p>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ display: block;
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Kann Breite und Höhe haben</p>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ display: block;
+ width: 20px;
+ height: 20px;
+ </code>
+ </pre>
+ </section>
+ <section>
+ <h3>Inline</h3>
+ <p>Wie einfacher Text, der mit anderen in der gleichen Zeile stehen kann</p>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ display: inline;
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Festlegen von Breite und Höhe sind wirkungslos</p>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ display: inline;
+ width: 20px; /* kein Effekt */
+ height: 20px; /* kein Effekt */
+ </code>
+ </pre>
+ </section>
+ <section>
+ <h3>Inline-Block</h3>
+ <p>Mischform von <code>inline</code> und <code>block</code></p>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ 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>
+ <section>
+ <h3>Box Model</h3>
+ <p>Es gibt zwei Varianten des Modells:</p>
+ <p><code>content-box</code> (default)</p>
+ <p>border-box</p>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ box-sizing: content-box;
+ box-sizing: border-box;
+ </code>
+ </pre>
+ </section>
+ <section>
+ <img data-src="/assets/images/css-box-model.png">
+ </section>
+ <section>
+ <h3>Beispiel</h3>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ div {
+ border: 3px solid red;
+ padding: 10px;
+ width: 100px;
+ }
+
+ .border-box {
+ box-sizing: border-box;
+ }
+
+ .content-box {
+ box-sizing: content-box;
+ }
+ </code>
+ </pre>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <script type="text/template">
+ <div class="content-box">content-box</div>
+ <div class="border-box">border-box</div>
+ </script>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <h3>Beispiel</h3>
+ <iframe data-src="/assets/html/box-sizing.html"></iframe>
+ </section>
+ <section>
+ <h3>Positioning</h3>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ /* default, da wo es in der Seite steht */
+ position: static;
+ /* relativ zu seiner eigentlichen Position */
+ position: relative;
+ /* relativ zu seinem nächsten non-static parent o. window */
+ position: absolute;
+ </code>
+ </pre>
+ </section>
+ <section>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ position: relative;
+ position: absolute;
+ </code>
+ </pre>
+ <p>erlauben Verschiebung mittels</p>
+ <pre>
+ <code class="css" data-trim data-line-numbers>
+ top: 10px;
+ left: 10px;
+ right: 10px;
+ bottom: 10px;
+ </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>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <script type="text/template">
+ <!DOCTYPE html>
+ <html lang="de">
+ <head>
+ <meta charset="UTF-8">
+ </head>
+ <body>
+ <!-- code -->
+ </body>
+ </html>
+ </script>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>Code wird zwischen <code>script</code>-Tags geschrieben</p>
+ <pre>
+ <code class="html" data-trim data-line-numbers>
+ <script>
+ ...
+ </script>
+ </code>
+ </pre>
+ </section>
+ <section>
+ <p>DOM-API</p>
+ <pre>
+ <code class="js" data-trim data-line-numbers>
+ // findet das erste Element
+ const element = document.querySelector("#id");
+
+ // findet alle Elemente
+ const elements = document.querySelectorAll("#id");
+
+ // Element erstellen
+ const newElement = document.createElement("div");
+
+ newElement.addEventListener("click", (event) => {
+ // Click-Event
+ });
+
+ newElement.remove();
+ </code>
+ </pre>
+ </section>
</section>
</div>
</div>
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