js将方法作为参数调用 

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <title>js调用</title>    
    <script src="cssjs/jquery.js" type="text/javascript"></script>
    <script type="text/javascript">
        $().ready(function () {
            $.dialog = function (settings) {
                if ($.isFunction(settings.okCallback)) {
                    if (settings.height == null) {
                        if (settings.okCallback.apply() != false) {
                            alert("1");
                        }
                    } else {
                        
                        if (settings.okCallback.call(this, settings.height) != false) {
                            alert("2");
                        }
                        
                        /*
                        if (settings.okCallback.apply(this, arguments) != false) {
                            alert("2");
                        }
                        */
                    }
                }
            }
        });        
    </script>
    <script type="text/javascript">
        $(function () {
            $.dialog({
                okCallback: print,
                height: {data:"你好"}
            });
        });
    function print(ee1) {
        alert("print(ee1)");
        
        alert(ee1.data);
        
        /*
        alert(ee1.height.data);
        */
    }
    /*
    function print(a, b, c, d) {
    alert(a + b + c + d);
    }
    function example(a, b, c, d) {
    //用call方式借用print,参数显式打散传递
    print.call(this, a, b, c, d);
    //用apply方式借用print, 参数作为一个数组传递,
    //这里直接用JavaScript方法内本身有的arguments数组
    print.apply(this, arguments);
    //或者封装成数组
    print.apply(this, [a, b, c, d]);
    }
    //下面将显示"背光脚本"
    example("背", "光", "脚", "本"); 
    */
    </script>
</head>
<body>
    
</body>
</html>

 

posted @ 2013-09-27 15:35  一千零一夜  阅读(9313)  评论(0)    收藏  举报