window.location.href.substr(window.location.href.length - 6)

if (window.location.href.substr(window.location.href.length - 6) == "flag=1") {

        var tOption = document.getElementById("two");
        tOption.text = "待确认订单";
        tOption.selected = true;
        if ($rootScope.loginInfo.isGroup > 0) {
            $scope.queryordersaaa(0);
        }
        else {
            $scope.queryordersaaa(0);
        }

    }

window.location.href.substr(window.location.href.length - 6)

原文：http://www.cnblogs.com/zhangxiaolei521/p/5145680.html