在线运行代码 - 代码学院 www.codexy.cn

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>代码学院(codexy.cn)</title>	
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script>
</head>
<body>

<script>
$(function () { 
	function fn1( value ) {
		alert( value );
	}
	function fn2( value ) {
		fn1("fn2 says: " + value);
		return false;
	}
	var callbacks = $.Callbacks( "memory" );
	callbacks.add( fn1 );
	callbacks.fire( "foo" );
	callbacks.add( fn2 );
	callbacks.fire( "bar" );
	callbacks.remove( fn2 );
	callbacks.fire( "foobar" );
	/*输出 :
	foo
	fn2 says:foo
	bar
	fn2 says:bar
	foobar
	*/
})
</script>
 
</body>
</html>
源代码

动行结果
