1 onLoad: function (options) {
 2     var that=this;    //在此时this指的是window，把其赋给that
 3    wx.request({
 4      url: '某地址',
 5      method:"get",
 6      data: {
 7        msg: {
 8          "buyerIdCard": "某证",
 9          "status":"yes"
10        }
11      },
12      header: {
13        "Content-Type": "application/json;charset=UTF-8"
14      },
15      success:function(res){
16        that.setData({       //在此就可直接用data中的属性了
17         listArr:res.data.msg
18        })
19      }
20    })
21   },

var obj = {
  foo() {
    console.log(this);
  },
  bar: () => {
    console.log(this);
  }
}

obj.foo() // {foo: ƒ, bar: ƒ}
obj.bar() // window