App下載
實例代碼( Tip: 登錄后體驗更佳 )
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool在线教程(w3cschool.cn)</title>  
<script src="/statics/js/jquery-1.8.3.min.js"></script>
</head>
<body>
<script>
$(function () { 
    function fn1( value ) {
        alert( value );
    }
    var callbacks = $.Callbacks(),
    add = callbacks.add,
    remove = callbacks.remove,
    fire = callbacks.fire;
    add( fn1 );
    fire( "hello world" );
    remove( fn1 ); 
    /*输出:hello world*/
})
</script>
 
</body>
</html>
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運行結果