My presentations, using Reveal.js (mostly in Portuguese).
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>$.noConflict</title>
<meta name="author" content="Julio Biason">
<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">
<link rel="stylesheet" href="_external/reveal.min.css">
<link rel="stylesheet" href="_external/default.css" id="theme">
<!-- For syntax highlighting -->
<link rel="stylesheet" href="_external/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 = '_external/pdf.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
}
</script>
<!--[if lt IE 9]>
<script src="reveal.js/lib/js/html5shiv.js"></script>
<![endif]-->
<style>
.semi-opaque {
background-color: rgba(0, 0, 0, 0.7);
}
* {
hyphens: none !important;
-moz-hyphens: none !important;
}
p.first {
background-color: #007700;
}
p.second {
background-color: #0000ff;
}
p.third {
background-color: #770000;
}
</style>
<script>
function getVersion(variable) {
try {
return variable.fn.jquery;
} catch (e) {
return e.toString();
}
}
</script>
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section data-background='_images/jquery_noconflict.jpg'>
</section>
<section>
<h2>O que é $.noConflict</h2>
<p class='fragment'>
Uma função do jQuery para evitar
conflitos com outras bibliotecas que
usem "<code>$</code>" como variável.
</p>
<p class='fragment'>
... incluindo o próprio jQuery.
</p>
</section>
<section>
<h2>Como funciona?</h2>
<p class='fragment'>
Quando o jQuery é carregado, ele verifica se
"<code>$</code>" já está definido e guarda internamente.
</p>
<p class='fragment'>
Chamando <code>$.noConflict()</code> restaura o
"<code>$</code>" original. "<code>$</code>" deixa
de ser um alías para "<code>jQuery</code>".
</p>
</section>
<section>
<section>
<h2>Como Usar?</h2>
</section>
<section>
<h2>... mas antes...</h2>
<pre><code class='javascript'>
function getVersion(variable) {
try {
return variable.fn.jquery;
} catch (e) {
return e.toString();
}
}
</code></pre>
</section>
<section>
<div style='font-size:150%'>
<pre><code class='javascript' data-trim>
$.noConflict();
</code></pre>
</div>
<ul>
<li>Se havia alguma biblioteca usando "<code>$</code>", ela volta
a ser usada com "<code>$</code>".</li>
<li>jQuery deixa de ser "<code>$</code>".</li>
<li>jQuery ainda está disponível como "<code>jQuery</code>".</li>
</ul>
</section>
<section>
<p class='first'>
$.fn.jquery: <span id='ex-1-1'></span>
</p>
<p class='second'>
jQuery.fn.jquery: <span id='ex-1-2'></span>
</p>
<script src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
<script>$.noConflict();</script>
<script>
document.getElementById('ex-1-1').innerHTML = getVersion($);
document.getElementById('ex-1-2').innerHTML = getVersion(jQuery);
</script>
<pre><code class='javascript' data-trim>
&lt;p class='first'&gt;
$.fn.jquery: &lt;span id='ex-1-1'&gt;&lt;/span&gt;
&lt;/p&gt;
&lt;p class='second'&gt;
jQuery.fn.jquery: &lt;span id='ex-1-2'&gt;&lt;/span&gt;
&lt;/p&gt;
&lt;script src='http://code.jquery.com/jquery-1.11.1.min.js'&gt;&lt;/script&gt;
&lt;script&gt;$.noConflict();&lt;/script&gt;
&lt;script&gt;
document.getElementById('ex-1-1').innerHTML = getVersion($);
document.getElementById('ex-1-2').innerHTML = getVersion(jQuery);
&lt;/script&gt;
</code></pre>
</section>
<section>
<div style='font-size:150%'>
<pre><code class='javascript' data-trim>
<script src='jquery.min.js'></script>
<script>
var $novojQuery = $.noConflict();
</script>
</code></pre>
</div>
<ul>
<li>Se havia alguma biblioteca usando "<code>$</code>", ela volta
a ser usada com "<code>$</code>".</li>
<li>jQuery deixa de ser "<code>$</code>".</li>
<li>jQuery ainda está disponível como "<code>jQuery</code>" e
"<code>$novojQuery</code>".</li>
</ul>
</section>
<section>
<p class='first'>
$.fn.jquery: <span id='ex-2-1'></span>
</p>
<p class='second'>
jquery.fn.jquery: <span id='ex-2-2'></span>
</p>
<p class='third'>
novojQuery.fn.jquery: <span id='ex-2-3'></span>
</p>
<script src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
<script src='http://code.jquery.com/jquery-2.1.1.min.js'></script>
<script>
var novojQuery = $.noConflict();
document.getElementById('ex-2-1').innerHTML = getVersion($);
document.getElementById('ex-2-2').innerHTML = getVersion(jQuery);
document.getElementById('ex-2-3').innerHTML = getVersion(novojQuery);
</script>
<pre><code class='html' data-trim>
&lt;p class='first'&gt;$.fn.jquery: &lt;span id='ex-2-1'&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p class='second'&gt;jquery.fn.jquery: &lt;span id='ex-2-2'&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p class='third'&gt;novojQuery.fn.jquery: &lt;span id='ex-2-3'&gt;&lt;/span&gt;&lt;/p&gt;
&lt;script src='http://code.jquery.com/jquery-1.11.1.min.js'&gt;&lt;/script&gt;
&lt;script src='http://code.jquery.com/jquery-2.1.1.min.js'&gt;&lt;/script&gt;
&lt;script&gt;
var novojQuery = $.noConflict();
document.getElementById('ex-2-1').innerHTML = getVersion($);
document.getElementById('ex-2-2').innerHTML = getVersion(jQuery);
document.getElementById('ex-2-3').innerHTML = getVersion(novojQuery);
&lt;/script&gt;
</code></pre>
</section>
<section>
<div style='font-size:150%'>
<pre><code class='javascript' data-trim>
<script src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
<script src='http://code.jquery.com/jquery-2.1.1.min.js'></script>
<script>
$.noConflict();
(function ($) {
// jQuery está disponível como "$"
})(jQuery));
</script>
</code></pre>
</div>
<ul>
<li>Na verdade, cria uma função anônima que recebe
o parâmetro "<code>$</code>" e chama esta função
passando o jQuery.</li>
<li>O resultado é que, dentro da função, o jQuery parece
ser o mesmo velho jQuery de sempre.</li>
</ul>
</section>
<section>
<p class='first'>$.fn.jquery: <span id='ex-3-1'></span></p>
<p class='second'>function ($): <span id='ex-3-2'></span></p>
<script src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
<script src='http://code.jquery.com/jquery-2.1.1.min.js'></script>
<script>
$.noConflict();
(function ($) {
document.getElementById('ex-3-2').innerHTML = getVersion($);
})(jQuery);
document.getElementById('ex-3-1').innerHTML = getVersion($);
</script>
<pre><code class='html' data-trim>
&lt;p class='first'&gt;$.fn.jquery: &lt;span id='ex-3-1'&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p class='second'&gt;function ($): &lt;span id='ex-3-2'&gt;&lt;/span&gt;&lt;/p&gt;
&lt;script src='http://code.jquery.com/jquery-1.11.1.min.js'&gt;&lt;/script&gt;
&lt;script src='http://code.jquery.com/jquery-2.1.1.min.js'&gt;&lt;/script&gt;
&lt;script&gt;
$.noConflict();
(function ($) {
document.getElementById('ex-3-2').innerHTML = getVersion($);
})(jQuery);
document.getElementById('ex-3-1').innerHTML = getVersion($);
&lt;/script&gt;
</code></pre>
</section>
<section>
<div style='font-size:150%'>
<pre><code class='javascript' data-trim>
&lt;script src='http://code.jquery.com/jquery-1.11.1.min.js'&gt;&lt;/script&gt;
&lt;script src='http://code.jquery.com/jquery-2.1.1.min.js'&gt;&lt;/script&gt;
&lt;script&gt;
$.noConflict();
jQuery(document).ready(function ($) {
// jQuery está disponível aqui como "$";
});
// outra biblioteca disponível como "$" aqui.
&lt;/script&gt;
</code></pre>
</div>
<ul>
<li>jQuery aparece como "<code>$</code>" apenas
dentro da função.</li>
</ul>
</section>
</section>
<section data-background='_images/thats-all-folks.jpg'>
<section></section>
</section>
</div>
</div>
<script src="_external/head.min.js"></script>
<script src="_external/reveal.min.js"></script>
<script>
// Full list of configuration options available here:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
theme: 'default',
transition: 'linear',
// Optional libraries used to extend on reveal.js
dependencies: [
{ src: '_external/classList.js', condition: function() { return !document.body.classList; } },
{ src: '_external/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: '_external/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: '_external/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: '_external/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
{ src: '_external/notes.js', async: true, condition: function() { return !!document.body.classList; } }
]
});
</script>
</body>
</html>