小程序开发，wx.request中如何修改page的data里的数据啊用this，跟that都不行呀？

Question

Answer 1

var that = this
wx.request({
    ...
    ...
    that.setData()
})

Answer 2

that is not defined,你需要在外面声明一下that

Answer 3

你要提前把 this 赋值给 that

Answer 4

this，指向不是page，如果你用箭头函数，就不存在this出问题。你现在指向有问题。that没有申明，建议你直接封装你的 request 请求
wx.request({

  url: url, //仅为示例，并非真实的接口地址
  data: data,
  header: { 'content-type': 'application/json' },
  success: res => callback && callback(res.data)
})

Answer 5

上面的大神们已经说出了答案 var that = this

Answer 6

let that = this;
that.setData({
    xxx:xxxx //code
})