# UploadTask

Start from base library version 1.4.0. Please remaining backward compatible.

One can listen to upload progress changes in the event, as well as cancel the upload task object

# method

# UploadTask.abort()

Interrupt upload task

# UploadTask.onProgressUpdate(function callback)

Monitor upload progress changes

# UploadTask.offProgressUpdate(function callback)

Cancel listening upload progress change event

# UploadTask.onHeadersReceived(function callback)

to monitor HTTP Response Header Events. Will be earlier than the request to complete the event

# UploadTask.offHeadersReceived(function callback)

Cancel the wiretap. HTTP Response Header event

# sample code

const uploadTask = wx.uploadFile({
  url: 'http://example.WeChat.qq.with/upload', //Example only, not real interface address
  filePath: tempFilePaths[0],
  name: 'file',
  formData:{
    'user': 'test'
  },
  success (res){
    const data = res.data
    //of the something
  }
})

uploadTask.onProgressUpdate((res) => {
  console.log("Upload progress"? res.progress)
  console.log('length of data already uploaded ', res.totalBytesSent)
  console.log("Total length of data expected to be uploaded," res.totalBytesExpectedToSend)
})

uploadTask.abort() // Cancel upload task