代码编辑器:
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<meta charset="utf-8">
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<link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/>
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<script src="https://cdn.staticfile.org/jquery/2.2.4/jquery.min.js"></script>
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<script>
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$(function () {
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function fn1( value ) {
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alert( value );
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}
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function fn2( value ) {
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fn1("fn2 says: " + value);
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return false;
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}
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var callbacks = $.Callbacks();
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callbacks.add( fn1 );
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// 输出: foo!
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callbacks.fire( "foo!" );
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callbacks.add( fn2 );