以下是我的方法，请问是怎么回事呢？

doWordIndentify: function () {

var that = this

that.setData({

showOcrResult: false

})

data: {

ocrImgUrl: null

}

wx.chooseImage({

count: 1,

sizeType: ['compressed'],

sourceType: ['album', 'camera'],

success: function (res) {

var tempfilePath = res.tempFilePaths[0]

that.setData({

ocrImgUrl: tempfilePath,

})

console.log(tempfilePath)

wx.uploadFile({

url: 'https://zs.nxxxjs.top/API/getImage',

filePath: tempfilePath,

name: 'file',

formData: {

'user': 'test'

},

success: function (res) {

wx.showToast({

title: '解析成功',

icon: 'succes',

duration: 1000,

mask: true

})

var carN = res.data

console.log(carN)

console.log(carN[0])

var carN1 = carN.slice(15,-4)

console.log(carN1)

that.setData({

inputTxt1: carN1,

})

//do something

}, fail: function (err) {

console.log(err)

}

})

},

fail: function (res) {

// fail

},

complete: function (res) {

// complete

}

})

},