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callbacks.empty.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>callbacks.empty() | jQuery API 中文手册</title>
<meta name="author" content="jQuery 中文手册 - hemin.cn/jq/">
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</head>
<body id="split">
<div id="content" class="a2">
<div rel="callbacks.empty">
<h2><span>返回值:undefined</span>callbacks.empty()</h2>
<h3><em>V1.7</em>概述</h3>
<div class="desc">
<p> 从列表中删除所有的回调. </p>
<div class="longdesc">
<p></p>
</div>
</div>
<div class="example">
<h3>示例</h3>
<span id="f_ad2"></span>
<h4>描述:</h4>
<p> 使用 callbacks.empty() 清空回调列表: </p>
<h5>jQuery 代码:</h5>
<pre><code>// a sample logging function to be added to a callbacks list
var foo = function( value1, value2 ){
console.log( 'foo:' + value1 + ',' + value2 );
}
// another function to also be added to the list
var bar = function( value1, value2 ){
console.log( 'bar:' + value1 + ',' + value2 );
}
var callbacks = $.Callbacks();
// add the two functions
callbacks.add( foo );
callbacks.add( bar );
// empty the callbacks list
callbacks.empty();
// check to ensure all callbacks have been removed
console.log( callbacks.has( foo ) ); // false
console.log( callbacks.has( bar ) ); // false</code></pre>
</div>
</div>
</div>
</body>
</html>