jq.proxy

来源：互联网发布：安卓上的windows模拟器编辑：程序博客网时间：2024/06/05 01:56
<!doctype html><html><head lang="zh">    <meta charset="utf-8">    <title>灵域</title>    <meta name="renderer" content="webkit"><style></style><script src="http://yygame.duowan.com/Web/Public/Jcode/js/jquery.min.js"></script></head><body ><button>1111</button><a>2222</a>    <script>    var name = 'tmt';    var person ={name:'magicfly',agae:{'a':10}}    function showName(){        alert(this.name)    }    $.proxy(showName,person)//是返回一个新的函数,没执行    //$.proxy(showName,person)();//这才要执行的函数，注意加括号   $.proxy(fn,context)    $('button').click($.proxy(showName,person))    //另外一种用法,$.proxy(context,name),    show = {        name : 12,        Name :function(){            alert(this.name);        }    }    $('a').click($.proxy(show,'Name'));     /*    // A global GUID counter for objects    guid: 1,    // Bind a function to a context, optionally partially applying any    // arguments.    proxy: function( fn, context ) {        var args, proxy, tmp;        if ( typeof context === "string" ) {            tmp = fn[ context ];            context = fn;            fn = tmp;        }        // Quick check to determine if target is callable, in the spec        // this throws a TypeError, but we will just return undefined.        if ( !jQuery.isFunction( fn ) ) {            return undefined;        }        // Simulated bind        args = slice.call( arguments, 2 );        proxy = function() {            return fn.apply( context || this, args.concat( slice.call( arguments ) ) );        };        // Set the guid of unique handler to the same of original handler, so it can be removed        proxy.guid = fn.guid = fn.guid || jQuery.guid++;        return proxy;    }    */    </script></body></html>
发现JQ的proxy和JS的APPLY柯里化差不多
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