URL参数转换对象

    var parseQueryString = function (url) {
        var reg_url = /^[^\?]+\?([\w\W]+)$/,
                reg_para = /([^&=]+)=([\w\W]*?)(&|$)/g, //g is very important
                arr_url = reg_url.exec(url),
                ret = {};
        if (arr_url && arr_url[1]) {
            var str_para = arr_url[1], result;
            while ((result = reg_para.exec(str_para)) != null) {
                ret[result[1]] = result[2];
            }
        }
        return ret;
    }　　//使用方法：
    var url = "key0=0&key1=1&key2=&key3=http://www.g.cn?a=1&&b=2";
    var obj = parseQueryString(url);
    console.dir(obj);

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