javascript閉包的解決方案

來源:互聯網
上載者:User

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script type="text/javascript">

        /*以下是從Prototype架構中截取的代碼---------------------------------------*/
       
        var $A = function(iterable) {
            if (!iterable) return [];
            if (iterable.toArray) {
                return iterable.toArray();
            } else {
                var results = [];
                for (var i = 0, length = iterable.length; i < length; i++)
                    results.push(iterable[i]);
                return results;
            }
        }

        //閉包方法(第一個參數為Binder 方法所屬的對象,後面參數為Binder 方法的參數)。
        Function.prototype.bind = function() {
            var __method = this, args = $A(arguments), object = args.shift();
            return function() {
                return __method.apply(object, args.concat($A(arguments)));
            }
        }

        /*-------------------------------------------------------------------*/

        function Node(id, name, cn) {
            this.id = id;
            this.name = name;
            this.cn = cn;
        }
        var nodes = new Array();
        nodes[0] = new Node(1, "node1", "節點1");
        nodes[1] = new Node(2, "node2", "節點2");

        var nodeConfig = {};
        nodeConfig.ticks = 4 * 1000; //重新整理頻率
        nodeConfig.msg = "運行中";

        function showStatus(node) {
            alert(node.name + ":" + nodeConfig.msg);
        }

        function start() {
            var len = nodes.length;
            for (var i = 0; i < len; i++) {
             //閉包解決。
                var bindFun = showStatus.bind(null, nodes[i]);
                setInterval(bindFun, nodeConfig.ticks);
            }
        }

        start();           
       
       
    </script>

</head>
<body>
    <input id="Button1" type="button" value="button" onclick="tt();" />
</body>
</html>

參考文章:http://www.cnblogs.com/KevinYang/archive/2009/07/14/1522915.html

相關文章

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.