javascript获取网址中的参数与参数值

    function getPara() {
        var paras = [];
        var values = [];
        var url = window.location.href;  //获取网址字符串
        var len = url.length;
        var offset = url.indexOf("?");
        var str = url.substr(offset, len);
        var args = str.split("&");
        len = args.length;
        for (var i = 0; i < len; i++) {
            str = args[i];
            var arg = str.split("=");
            if (args.length <= 1) break;
            else {
                paras[i] = arg[0];      //参数名
                values[i] = arg[1];     //参数值
            }
        }
    }