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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Frontend performance - podstawy - meetJS</title>
<meta name="description" content="Short presentation about frontend performance">
<meta name="author" content="Damian Jóźwiak">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<link rel="stylesheet" href="css/reveal.min.css">
<link rel="stylesheet" href="css/theme/default.css" id="theme">
<!-- For syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<!-- If the query includes 'print-pdf', include the PDF print sheet -->
<script>
if( window.location.search.match( /print-pdf/gi ) ) {
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = 'css/print/pdf.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
}
</script>
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<h2>Frontend performance - podstawy</h2>
<br>
<h3>meet.js 11.04.2014</h3>
<br><br>
<p>
<img src="images/wikia_logo.png" style="background: none; border: 0; box-shadow: none; margin: 0;"><br>
<small><a href="<a href="mailto:damian@wikia-inc.com">mailto:damian@wikia-inc.com</a>">Damian <a href="https://github.com/kvas-damian">kvas</a> Jóźwiak</a> </small>
</p>
</section>
<section>
<h2>FizzBuzz</h2>
</section>
<section>
<section>
<h2>Live coding</h2>
<h3>Keep fingers crossed! :)</h3>
<p>
<a href="http://codeshare.io/AY28T">CodeShare.io</a>
</p>
</section>
<section>
<h3><strike>Scripts in the HEAD</strike></h3>
<h3>Scripts at the bottom of body</h3>
</section>
<section>
<h3>Selectors caching</h3>
</section>
<section>
<h3>Number of DOM operations</h3>
</section>
<section>
<h3>Ok, so where are numbers?</h3>
<p><br>
<a href="http://jsperf.com/fizzbuzz-jquery-vs-vanila/2">jsPerf</a><br><br>
<a href="images/fizzbuzz.jpg">Results</a>
</p>
</section>
<section>
<h3>Modulo operations?</h3>
<p>
Not so fast... <br><a href="http://jsperf.com/modulo-calculations/2">jsPerf</a>
<br><br>
<a href="images/modulo.jpg">Results</a>
</p>
</section>
</section>
<section>
<h2>Questions?</h2>
<img src="images/questions.jpg">
</section>
<section>
<h2>Links</h2>
<ul>
<li><a href="http://jsperf.com/fizzbuzz-jquery-vs-vanila/2">http://jsperf.com/fizzbuzz-jquery-vs-vanila/2</a></li>
<li><a href="http://jsperf.com/modulo-calculations/2">http://jsperf.com/modulo-calculations/2</a></li>
<li><a href="http://jsperf.com/">jsPerf</a></li>
</ul>
</section>
<section>
<h2>Thanks!</h2>
</section>
<section>
<h2>Wikia is hiring</h2>
<h3><a href="http://www.wikia.com/Careers">www.wikia.com/Careers</a></h3>
<!-- TODO Add photo -->
</section>
<section>
<section>
<h2>Want more?</h2>
</section>
<section>
<h2>String concatenation</h2>
<p>
<a href="http://jsperf.com/string-concatenation/47">jsPerf</a><br><br>
<a href="images/string_concat.jpg">Results</a>
</p>
</section>
<section>
<h2>jQuery selectors</h2>
<code>
var $test = $('#list .test');<br> <a><strong>vs</strong></a> <br>
var $test = $('#list').find('.test');
</code><br><br>
<p>
<a href="http://jsperf.com/jquery-selectors-context/2">jsPerf</a><br ><br>
<a href="images/jquery_selectors.jpg">Results</a>
</p>
</section>
<section>
<h2>Event delegation</h2>
<code style="text-align: left;">
<ul id="list"><br><li>a</li><br><li>b</li><br><li>c</li><br></ul>
</code>
</section>
<section>
<h2>Event delegation</h2>
<code>
document.getElementById('list')<br>
.addEventListener('click', function(e) { <br>if ( <strong>e.target && e.eventTarget == "..."</strong>){}<br> });
</code>
</section>
<section>
<h2>Memoization</h2>
</section>
<section>
<h2>Recursive vs iteration</h2>
<p>
<strong>Don't use recursion!<strong> My browser is dying when hits 500 level of nesting.<br>
<img src="images/error.jpg">
</p>
</section>
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.min.js"></script>
<script>
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
theme: Reveal.getQueryHash().theme, // available themes are in /css/theme
transition: Reveal.getQueryHash().transition || 'default', // default/cube/page/concave/zoom/linear/fade/none
// Parallax scrolling
// parallaxBackgroundImage: 'https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg',
// parallaxBackgroundSize: '2100px 900px',
// Optional libraries used to extend on reveal.js
dependencies: [
{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
{ src: 'plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }
]
});
</script>
</body>
</html>