async modification(row, operate_type) {

      const parms = {
        operate_type,
        acticvityId,
        user_id: user.state.userInfo.user.id,
      };

      let res;
      if (operate_type == 2) {
        this.$confirm('此操作将永久删除该条信息, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        })
          .then(async () => {
            res = await merchanupdate(parms);
          })
          .then(() => {
            if (res && res.error.code == 0) {
              Message.success(res.error.msg);
            } else {
              Message.error(res.error.msg);
            }
          });
      } else {
        res = await merchanupdate(parms);
        if (res && res.error.code == 0) {
          Message.success(res.error.msg);
          this.dialogVisible = false;
          this.lists();
        } else {
          Message.error(res.error.msg);
        }
      }
    },

作用域：

同一作用域内async才能使用await