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305 lines
11 KiB
305 lines
11 KiB
10 years ago
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>$.noConflict</title>
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<meta name="author" content="Julio Biason">
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<meta name="apple-mobile-web-app-capable" content="yes" />
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<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
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<link rel="stylesheet" href="_external/reveal.min.css">
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<link rel="stylesheet" href="_external/default.css" id="theme">
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<!-- For syntax highlighting -->
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<link rel="stylesheet" href="_external/zenburn.css">
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<!-- If the query includes 'print-pdf', include the PDF print sheet -->
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<script>
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if( window.location.search.match( /print-pdf/gi ) ) {
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var link = document.createElement( 'link' );
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link.rel = 'stylesheet';
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link.type = 'text/css';
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link.href = '_external/pdf.css';
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document.getElementsByTagName( 'head' )[0].appendChild( link );
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}
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</script>
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<!--[if lt IE 9]>
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<script src="reveal.js/lib/js/html5shiv.js"></script>
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<![endif]-->
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<style>
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.semi-opaque {
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background-color: rgba(0, 0, 0, 0.7);
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}
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* {
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hyphens: none !important;
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-moz-hyphens: none !important;
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}
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p.first {
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background-color: #007700;
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}
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p.second {
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background-color: #0000ff;
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}
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p.third {
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background-color: #770000;
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}
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</style>
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<script>
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function getVersion(variable) {
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try {
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return variable.fn.jquery;
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} catch (e) {
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return e.toString();
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}
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}
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</script>
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</head>
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<body>
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<div class="reveal">
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<!-- Any section element inside of this container is displayed as a slide -->
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<div class="slides">
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<section data-background='_images/jquery_noconflict.jpg'>
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</section>
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<section>
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<h2>O que é $.noConflict</h2>
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<p class='fragment'>
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Uma função do jQuery para evitar
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conflitos com outras bibliotecas que
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usem "<code>$</code>" como variável.
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</p>
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<p class='fragment'>
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... incluindo o próprio jQuery.
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</p>
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</section>
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<section>
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<h2>Como funciona?</h2>
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<p class='fragment'>
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Quando o jQuery é carregado, ele verifica se
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"<code>$</code>" já está definido e guarda internamente.
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</p>
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<p class='fragment'>
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Chamando <code>$.noConflict()</code> restaura o
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"<code>$</code>" original. "<code>$</code>" deixa
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de ser um alías para "<code>jQuery</code>".
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</p>
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</section>
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<section>
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<section>
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<h2>Como Usar?</h2>
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</section>
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<section>
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<h2>... mas antes...</h2>
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<pre><code class='javascript'>
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function getVersion(variable) {
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try {
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return variable.fn.jquery;
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} catch (e) {
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return e.toString();
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}
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}
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</code></pre>
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</section>
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<section>
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<div style='font-size:150%'>
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<pre><code class='javascript' data-trim>
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<script src='jquery.min.js'></script>
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<script>
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$.noConflict();
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</script>
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</code></pre>
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</div>
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<ul>
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<li>Se havia alguma biblioteca usando "<code>$</code>", ela volta
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a ser usada com "<code>$</code>".</li>
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<li>jQuery deixa de ser "<code>$</code>".</li>
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<li>jQuery ainda está disponível como "<code>jQuery</code>".</li>
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</ul>
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</section>
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<section>
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<p class='first'>
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$.fn.jquery: <span id='ex-1-1'></span>
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</p>
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<p class='second'>
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jQuery.fn.jquery: <span id='ex-1-2'></span>
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</p>
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<script src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
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<script>$.noConflict();</script>
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<script>
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document.getElementById('ex-1-1').innerHTML = getVersion($);
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document.getElementById('ex-1-2').innerHTML = getVersion(jQuery);
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</script>
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<pre><code class='javascript' data-trim>
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<p class='first'>
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$.fn.jquery: <span id='ex-1-1'></span>
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</p>
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<p class='second'>
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jQuery.fn.jquery: <span id='ex-1-2'></span>
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</p>
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<script src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
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<script>$.noConflict();</script>
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<script>
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document.getElementById('ex-1-1').innerHTML = getVersion($);
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document.getElementById('ex-1-2').innerHTML = getVersion(jQuery);
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</script>
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</code></pre>
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</section>
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<section>
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<div style='font-size:150%'>
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<pre><code class='javascript' data-trim>
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<script src='jquery.min.js'></script>
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<script>
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var $novojQuery = $.noConflict();
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</script>
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</code></pre>
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</div>
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<ul>
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<li>Se havia alguma biblioteca usando "<code>$</code>", ela volta
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a ser usada com "<code>$</code>".</li>
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<li>jQuery deixa de ser "<code>$</code>".</li>
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<li>jQuery ainda está disponível como "<code>jQuery</code>" e
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"<code>$novojQuery</code>".</li>
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</ul>
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</section>
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<section>
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<p class='first'>
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$.fn.jquery: <span id='ex-2-1'></span>
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</p>
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<p class='second'>
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jquery.fn.jquery: <span id='ex-2-2'></span>
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</p>
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<p class='third'>
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novojQuery.fn.jquery: <span id='ex-2-3'></span>
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</p>
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<script src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
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<script src='http://code.jquery.com/jquery-2.1.1.min.js'></script>
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<script>
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var novojQuery = $.noConflict();
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document.getElementById('ex-2-1').innerHTML = getVersion($);
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document.getElementById('ex-2-2').innerHTML = getVersion(jQuery);
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document.getElementById('ex-2-3').innerHTML = getVersion(novojQuery);
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</script>
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<pre><code class='html' data-trim>
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<p class='first'>$.fn.jquery: <span id='ex-2-1'></span></p>
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<p class='second'>jquery.fn.jquery: <span id='ex-2-2'></span></p>
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<p class='third'>novojQuery.fn.jquery: <span id='ex-2-3'></span></p>
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<script src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
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<script src='http://code.jquery.com/jquery-2.1.1.min.js'></script>
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<script>
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var novojQuery = $.noConflict();
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document.getElementById('ex-2-1').innerHTML = getVersion($);
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document.getElementById('ex-2-2').innerHTML = getVersion(jQuery);
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document.getElementById('ex-2-3').innerHTML = getVersion(novojQuery);
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</script>
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</code></pre>
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</section>
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<section>
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<div style='font-size:150%'>
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<pre><code class='javascript' data-trim>
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<script src='jquery.min.js'></script>
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<script>
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$.noConflict();
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jQuery(document).ready(function ($) {
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// jQuery está disponível aqui como "$";
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});
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// outra biblioteca disponível como "$" aqui.
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</script>
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</code></pre>
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</div>
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<ul>
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<li>jQuery aparece como "<code>$</code>" apenas
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dentro da função.</li>
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</ul>
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</section>
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<section>
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<script src='http://code.jquery.com/jquery-1.11.1.min.js'></script>
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<script src='http://code.jquery.com/jquery-2.1.1.min.js'></script>
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<p class='first'>
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$.fn.jquery: <script>document.write($.fn.jquery);</script>
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</p>
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<p class='second'>
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</p>
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<pre><code class='javascript' data-trim>
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</code></pre>
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</section>
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</section>
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</div>
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</div>
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<script src="_external/head.min.js"></script>
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<script src="_external/reveal.min.js"></script>
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<script>
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// Full list of configuration options available here:
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// https://github.com/hakimel/reveal.js#configuration
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Reveal.initialize({
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controls: true,
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progress: true,
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history: true,
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center: true,
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theme: 'default',
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transition: 'linear',
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// Optional libraries used to extend on reveal.js
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dependencies: [
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{ src: '_external/classList.js', condition: function() { return !document.body.classList; } },
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{ src: '_external/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
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{ src: '_external/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
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{ src: '_external/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
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{ src: '_external/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
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{ src: '_external/notes.js', async: true, condition: function() { return !!document.body.classList; } }
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]
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});
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</script>
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</body>
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</html>
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