wx.request的success中无发修改页面的初始数据？

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wx.request的success中无发修改页面的初始数据？Didn’t modify the initial data of the page in the success of wx.request?

下面两个方法都无法修改初始化数据中的sms，第一种是没效果，第二种直接报sms_code为空。求各位前辈指点一下//反法一不行Page({  /**   * 页面的初始数据   */  data: {    TabCur: 0,    scrollLeft:0,    type: 0,    btn_disabled:true,    sms: 0  },  onLoad: function (options) {    wx.request({      url: 'http://xxx/wx/login/config',      success: function(res){          this.setData({            sms:res.data.data          })      }    })  },//方法二也不行Page({  /**   * 页面的初始数据   */  data: {    TabCur: 0,    scrollLeft:0,    type: 0,    btn_disabled:true,    sms: 0  },  onLoad: function (options) {            var sms_code;        wx.request({          url: 'http://xxx/wx/login/config',          success: function(res){          sms_code = res.data.data;            }          })           this.setData({            sms: sms_code       })              },

The following two methods cannot modify SMS in initialization data. The first method is ineffective, and the second method reports SMS directly_ Code is empty. Please give me some advice / / page ({/ * * * initial data of page * / data: {tabcur: 0, s crollLeft:0 ,    type: 0,    btn_ disabled:true ,    sms: 0  },  onLoad: function (options) {     wx.request ({      url: ' http://xxx/wx/login/config ',      success: function(res){           this.setData ({             sms:res.data.data           })      }    })  }, //Method 2 is not good either. Page ({/ * * * initial data of page * / data: {tabcur: 0, s) crollLeft:0 ,    type: 0,    btn_ disabled:true ,    sms: 0  },  onLoad: function (options) { var sms_ code;      wx.request ({       url: ' http://xxx/wx/login/config ',       success: function(res){ sms_ code = res.data.data ;       }     })   this.setData ({         sms: sms_ code    })   },

回答：

//作用域的问题，最外层加上var that = this：var that = thiswx.request({  url: 'http://xxx/wx/login/config',  success: function(res){    that.setData({      sms:res.data.data    })  }})

onLoad(options) {   wx.request({    url: 'http://xxx/wx/login/config',    success: (res) => {     let sms = res.data.data     this.setData({       sms     })    }  })}

success: (res) => {  // 这里 this 能正常使用}