<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Tiêu đề</title>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<style>
div {
    background-color: blue;
    float: left;
    margin-right: 20px;
    height: 100px;
    width: 100px;
}
p {
    clear: both;
}
</style>
<script>
$(function(){
    $('button').click(function(){
        $('.test03').hide(2000);
        $('.test02').hide('slow');
        $('.test01').hide();
    });
});
</script>
</head>

<body>
<p><button>Click</button></p>
<div class="test03">hide(2000)</div>
<div class="test02">hide('slow')</div>
<div class="test01">hide()</div>
</body>
</html>

External CSS

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External JavaScript

This Pen doesn't use any external JavaScript resources.