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<!doctype html>
<html lang="de">
<head>
<meta charset="utf-8">
<title>EWP: BEM & Flexboxes</title>
<meta name="description" content="Einführung in die Webprogrammierung SoSe 2016. Sitzung 4: BEM & Flexboxes">
<meta name="author" content="Oliver Pohl">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
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<link rel="stylesheet" href="css/theme/03-id.css">
<link rel="stylesheet" href="css/theme/03-margin.css">
<link rel="stylesheet" href="css/theme/03-padding.css">
<link rel="stylesheet" href="css/theme/04-flexbox-example.css">
<link rel="stylesheet" href="css/theme/04-flexbox-flex-n.css">
<link rel="stylesheet" href="css/theme/04-flexbox-justify-align.css">
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document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
<script src="js/jquery-1.11.1.min.js"></script>
<script src="js/ibi.js"></script>
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<h2>Einführung in die Webprogrammierung</h2>
<h4>Sitzung 04: BEM & Flexboxes</h4>
<h4>Oliver Pohl: <a href="mailto:opohl@bbaw.de">opohl@bbaw.de</a></h4>
</section>
<section>
<section>
<h2>Agenda: BEM & Flexboxes</h2>
<ul>
<li>Wiederholung: CSS</li>
<li>Block Entity Model (BEM)</li>
<li>Floats</li>
<li>Flexboxes</li>
</ul>
</section>
<section>
<h2>Wiederholung: CSS</h2>
</section>
<section>
<h2>CSS-Syntax</h2>
<pre><code>selektor { gestaltungsattribut: wert; }</code>Grundlegende CSS Syntax</pre>
<h3>Beispiel</h3>
<pre><code data-trim data-noescape>
div {
background-color: red;
color: white;
margin: 10px;
}
</code>Die Hintergrundfarbe für alle div-Elemente ist rot.
Texte in divs haben eine weiße Schrift.
Divs haben einen äußeren Abstand von 10 Pixeln zu allen Seiten.</pre>
</section>
<section>
<h2>Methodenvergleich</h2>
<table>
<thead>
<tr>
<th></th>
<th>Inline</th>
<th>Head</th>
<th>Extern</th>
</tr>
</thead>
<tbody>
<tr>
<td>Trennung zu HTML</td>
<td><i class="fa fa-frown-o"></i></td>
<td><i class="fa fa-meh-o"></i></td>
<td><i class="fa fa-smile-o"></i></td>
</tr>
<tr>
<td>Lesbarkeit</td>
<td><i class="fa fa-frown-o"></i></td>
<td><i class="fa fa-smile-o"></i></td>
<td><i class="fa fa-smile-o"></i></td>
</tr>
<tr>
<td>Nutzbarkeit in Projekten</td>
<td><i class="fa fa-frown-o"></i></td>
<td><i class="fa fa-frown-o"></i></td>
<td><i class="fa fa-smile-o"></i></td>
</tr>
<tr>
<td>Fazit</td>
<td><i class="fa fa-frown-o"></i></td>
<td><i class="fa fa-meh-o"></i></td>
<td><i class="fa fa-smile-o"></i></td>
</tr>
</tbody>
</table>
</section>
<section>
<h2>Farben im Web</h2>
<p>Insgesamt: über 16 Mio. Farben möglich</p>
<p>3 Farbkanäle - Rot, Grün, Blau</p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Hex-Code</th>
<th>Farbe</th>
</tr>
</thead>
<tbody>
<tr>
<td>Schwarz</td>
<td>#000000</td>
<td style="background-color: #000000"></td>
</tr>
<tr>
<td>Weiß</td>
<td>#FFFFFF</td>
<td style="background-color: #ffffff"></td>
</tr>
<tr>
<td>Rot</td>
<td>#FF0000</td>
<td style="background-color: #ff0000"></td>
</tr>
<tr>
<td>Grün</td>
<td>#00FF00</td>
<td style="background-color: #00ff00"></td>
</tr>
<tr>
<td>Blau</td>
<td>#0000FF</td>
<td style="background-color: #0000ff"></td>
</tr>
</tbody>
</table>
</section>
<section>
<h2>CSS-Befehle</h2>
<ul>
<li>font-size</li>
<li>width, height</li>
<li>color</li>
<li>background-color</li>
<li>padding, margin, border</li>
<li>position</li>
<li>floats</li>
</ul>
</section>
</section>
<section>
<h1>KAHOOT</h1>
<h3><a href="http://www.kahoot.it">www.kahoot.it</a></h3>
</section>
<section>
<section>
<h2>BEM</h2>
<h3>Block Entity Modifier</h3>
</section>
<section>
<h2>Block Entity Modifier</h2>
<ul>
<li>Block: Wiederkehrende Komponente
<ul>
<li>Suchtreffer</li>
<li>Info-Boxen</li>
<li>Overlays</li>
</ul>
</li>
<li>Entity: Teilelement in dieser Komponente
<ul>
<li>Titel vom Treffer</li>
<li>Metadaten</li>
<li>Links</li>
</ul>
</li>
<li>Modifier: Alternativer Status der Komponente
<ul>
<li>Bereits angeklickt</li>
<li>Zugriff nicht möglich</li>
<li>Verliehen</li>
</ul>
</li>
</ul>
</section>
<section>
<h2>BEM: Beispiel</h2>
<img src="assets/BEM/BEM-example.png" alt="">
</section>
<section>
<h2>BEM: Blocks</h2>
<img src="assets/BEM/BEM-example-blocks.png" alt="">
</section>
<section>
<h2>BEM: Entities</h2>
<img src="assets/BEM/BEM-example-element.png" alt="">
<div>
<ul>
<li><code style="color: red;">.Suchtreffer__Titel</code></li>
<li><code style="color: green;">.Suchtreffer__Link</code></li>
<li><code style="color: blue;">.Suchtreffer__Translate</code></li>
<li><code>.Suchtreffer__Snippet</code></li>
<li><code style="color: violet;">.Suchtreffer__Visited_at</code></li>
</ul>
</div>
</section>
<section>
<h2>BEM: Modifier</h2>
<img src="assets/BEM/BEM-example-modifier.png" alt="">
<div>
<ul>
<li>Alternativer Status: <code style="color: purple">.Suchtreffer--Visited</code></li>
<li>Normaler Status: <code style="">.Suchtreffer</code></li>
</ul>
</div>
</section>
<section>
<h2>Normales CSS</h2>
<pre><code data-code="./css/theme/04-css.css"></code>Suchtreffer Beispiel ohne BEM (fiktiv)</pre>
</section>
<section>
<h2>BEM: CSS</h2>
<pre><code data-code="./css/theme/04-bem.css"></code>Suchtreffer Beispiel mit BEM-Klassen</pre>
</section>
<section>
<h2>BEM vs. normales CSS</h2>
<table>
<thead>
<tr>
<th></th>
<th>BEM</th>
<th>CSS</th>
</tr>
</thead>
<tbody>
<tr>
<td>Konvention</td>
<td><i class="fa fa-smile-o"></i></td>
<td><i class="fa fa-meh-o"></i></td>
</tr>
<tr>
<td>Lesbarkeit</td>
<td><i class="fa fa-smile-o"></i></td>
<td><i class="fa fa-meh-o"></i></td>
</tr>
<tr>
<td>Komponentenorientiert</td>
<td><i class="fa fa-smile-o"></i></td>
<td><i class="fa fa-frown-o"></i></td>
</tr>
<tr>
<td>Speichereffizient</td>
<td><i class="fa fa-meh-o"></i></td>
<td><i class="fa fa-smile-o"></i></td>
</tr>
</tbody>
</table>
</section>
<section>
<h2>BEM: Übung</h2>
<a href="http://jsbin.com/yobikenowo/edit?html,css,output">http://goo.gl/z2hJGs</a>
</section>
<section>
<h1>KAHOOT</h1>
<h3><a href="http://www.kahoot.it">www.kahoot.it</a></h3>
</section>
</section>
<section>
<section>
<h2>Flexbox</h2>
</section>
<section>
<h2>Warmup</h2>
</section>
<section>
<h2>Floats</h2>
<div class="Code-Example__Code">
<pre><code class="Code--html" data-trim data-noescape>Jelly-o tootsie roll topping danish jelly-o bonbon caramels. Carrot Cake
<span class="custom-span" style="float: right">
ice cream cookie
</span>
halvah dessert cupcake tart.
Jelly oat cake jujubes sesame snaps cookie fruitcake.
</code></pre>
</div>
<div class="Code-Example__Result">
Jelly-o tootsie roll topping danish jelly-o bonbon caramels. Carrot Cake
<span class="custom-span" style="float: right">
ice cream cookie
</span>
halvah dessert cupcake tart.
Jelly oat cake jujubes sesame snaps cookie fruitcake.
</div>
</section>
<section>
<h2>Flexbox: Beispiel</h2>
<div class="Flex-Container Flex-Container--main">
<div class="Flex-Container__Child"></div>
<div class="Flex-Container__Child Flex-Container--column">
<div class="Flex-Container__Child"></div>
<div class="Flex-Container__Child Flex-Container">
<div class="Flex-Container__Child teal"></div>
<div class="Flex-Container__Child teal"></div>
<div class="Flex-Container__Child teal"></div>
</div>
<div class="Flex-Container__Child Flex-Container">
<div class="Flex-Container__Child teal"></div>
<div class="Flex-Container__Child teal"></div>
</div>
</div>
</div>
<pre><code data-code="./sessions/04/flexbox-example.html"></code></pre>
</section>
<section>
<h2>Flexbox: Beispiel</h2>
<div class="Flex-Container Flex-Container--main">
<div class="Flex-Container__Child"></div>
<div class="Flex-Container__Child Flex-Container--column">
<div class="Flex-Container__Child"></div>
<div class="Flex-Container__Child Flex-Container">
<div class="Flex-Container__Child teal"></div>
<div class="Flex-Container__Child teal"></div>
<div class="Flex-Container__Child teal"></div>
</div>
<div class="Flex-Container__Child Flex-Container">
<div class="Flex-Container__Child teal"></div>
<div class="Flex-Container__Child teal"></div>
</div>
</div>
</div>
<pre><code data-code="./css/theme/04-flexbox-example.css"></code></pre>
</section>
<section>
<h2>Flexbox Aufbau</h2>
<pre><code data-code="./sessions/04/flexbox-example.html" class="Code-Example--small"></code></pre>
<pre><code data-code="./css/theme/04-flexbox-aufbau.css" class="Code-Example--small"></code></pre>
</section>
<section>
<h2><code>flex: n;</code></h2>
<div class="Flex-Container Flex-Container--main">
<div class="Flex-Container__Child"></div>
<div class="Flex-Container__Child Flex-Container--column">
<div class="Flex-Container__Child"></div>
<div class="Flex-Container__Child Flex-Container">
<div class="Flex-Container__Child teal"></div>
<div class="Flex-Container__Child teal"></div>
<div class="Flex-Container__Child teal"></div>
</div>
<div class="Flex-Container__Child Flex-Container">
<div class="Flex-Container__Child teal"></div>
<div class="Flex-Container__Child teal"></div>
</div>
</div>
</div>
<pre><code data-code="./css/theme/04-flexbox-flex-n.css" class="Code-Example--small"></code></pre>
</section>
<section>
<h2><code>align-items</code></h2>
<ul>
<li>flex-start, flex-end, center, stretch</li>
</ul>
<div class="Flex-Container Flex-Container--main">
<div class="Flex-Container__Child Flex-Container__Child--align-end ">Block</div>
<div class="Flex-Container__Child Flex-Container__Child--align-end Flex-Container--column">
<div class="Flex-Container__Child Flex-Container__Child--align-end ">Block</div>
<div class="Flex-Container__Child Flex-Container__Child--align-end Flex-Container">
<div class="Flex-Container__Child Flex-Container__Child--align-end teal">A</div>
<div class="Flex-Container__Child Flex-Container__Child--align-end teal">B</div>
<div class="Flex-Container__Child Flex-Container__Child--align-end teal">C</div>
</div>
<div class="Flex-Container__Child Flex-Container">
<div class="Flex-Container__Child Flex-Container__Child--align-end teal">1</div>
<div class="Flex-Container__Child Flex-Container__Child--align-end teal">2</div>
</div>
</div>
</div>
<pre><code data-code="./css/theme/04-flexbox-justify-align.css"></code></pre>
</section>
<section>
<h2><code>justify-content</code></h2>
<ul>
<li>flex-start, flex-end, center, space-between, space-around</li>
<li>Element muss <code>display: flex;</code> haben</li>
</ul>
<div class="Flex-Container Flex-Container--main">
<div class="Flex-Container__Child Flex-Container__Child--justify-end ">Block</div>
<div class="Flex-Container__Child Flex-Container__Child--justify-end Flex-Container--column">
<div class="Flex-Container__Child Flex-Container__Child--justify-end ">Block</div>
<div class="Flex-Container__Child Flex-Container__Child--justify-end Flex-Container">
<div class="Flex-Container__Child Flex-Container__Child--justify-end teal">A</div>
<div class="Flex-Container__Child Flex-Container__Child--justify-end teal">B</div>
<div class="Flex-Container__Child Flex-Container__Child--justify-end teal">C</div>
</div>
<div class="Flex-Container__Child Flex-Container__Child--justify-end Flex-Container">
<div class="Flex-Container__Child Flex-Container__Child--justify-end teal">1</div>
<div class="Flex-Container__Child Flex-Container__Child--justify-end teal">2</div>
</div>
</div>
</div>
<pre><code data-code="./css/theme/04-flexbox-justify-align.css"></code></pre>
</section>
<section>
<h2>Flexbox: Übung</h2>
<a href="http://jsbin.com/ruhoxuceco/edit?html,css,output">http://goo.gl/xWwqGr</a>
</section>
<section>
<h1>KAHOOT</h1>
<h3><a href="http://www.kahoot.it">www.kahoot.it</a></h3>
</section>
</section>
<section>
<section>
<h2>Hausaufgabe 07: BEM</h2>
<ul>
<li>Webseite mit Katalogeinträgen erstellen</li>
<li>BEM als Konvention für die Klassenbenennung nutzen</li>
<li>Bonus: Flexbox nutzen</li>
</ul>
</section>
<section>
<h2>Hausaufgabe 08: Flexbox</h2>
<ul>
<li>Flexbox-Beispiele aus dem Warmup nachimplementieren</li>
<li>Bonus: Farbschema vergeben</li>
</ul>
</section>
</section>
<section>
The next time on <b>EWP</b>
<p>JSON</p>
</section>
</div>
<div class="footer">
<a href="https://creativecommons.org/licenses/by/4.0/">
<img src="img/cc-by.png" alt="CC-BY" id="cc-logo">
</a>
Oliver Pohl, Einführung in die Webprogrammierung (SoSe 2016), Sitzung 04: BEM & Flexboxes. -- <a href="http://telotadev.bbaw.de/ewp-helper/questions">Anonyme Fragen: http://goo.gl/dDkMeL</a>
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