获取当前页面url并截取所需字段

  let url =
          window.location.href; // 动态获取当前url
          // 例： "http://i.cnblogs.com/henanyundian/web/app/#/store?userId=12345678&productId=1234567&shopId=1234567&roleId=1";
        let obj = {};
        let reg = /[?&][^?&]+=[^?&]+/g;
        let arr = url.match(reg);
        if (arr) {
            arr.forEach(item => {
                let tempArr = item.substring(1).split("=");
                let key = decodeURIComponent(tempArr[0]);
                let val = decodeURIComponent(tempArr[1]);
                obj[key] = val;
            });
        }， // 截取所需字段并赋值
            this.userId = obj.userId;
            this.productId = obj.productId;
            this.shopId = obj.shopId;
            this.roleId = obj.roleId;