javascript中获取参数的方法

var $GET = (function(str){        var temp = {};        if(!str){            return temp;        }        str = str.indexOf("?") == 0 ? str.replace(/\?/i,'') : str;        str = str.split("&");        for(var i=0;i<str.length;i++){            str[i] = str[i].split("=");            temp[str[i][0]] = str[i][1]        }        return temp;    })(window.location.search);