微信小程序 this.setData is not a function

1 bindFaChange1: function (e) {
2     console.log(‘picker发送选择改变，携带值为‘, e.detail.value)
3     this.setData({
4       index1: e.detail.value
5     })
6   }

 1 formSubmit: function (e) {
 2     wx.request({
 3       method: ‘POST‘,
 4       header: header,
 5       url: url,
 6       dataType: ‘json‘,
 7      success: function (res) {
 8            this.setData({
 9               data1: true
10             })
11       }
12     })
13 }

 1 var si = setInterval(function () {
 2         that.setData({
 3           sendVerifyingCodeText: curCount + ‘秒后重新获取‘
 4         });
 5         that.setData({
 6           sendSmsCodeDisable: true
 7         });
 8         curCount--;
 9         if (curCount <= 0) {
10           that.setData({
11             sendSmsCodeDisable: false
12           }),
13           clearInterval(si);
14         }
15       }, 1000);

1 that.setData({
2               data1: true
3             })