El upload upload file (manual upload, automatic upload, upload progress)

I don't say much nonsense , Look at the picture directly ：
One ： Manually upload

What we need to do after clicking upload ：

  What we need to do when deleting files ：

What we need to do when we click OK to upload ：
  After uploading successfully ：

Upload progress , among customClass For custom classes （ This article is not explained in detail ）：
 

 html in ：

  Two ： Auto upload
Auto upload can only be uploaded once , Click upload and the selected file will be automatically uploaded to action After the defined address succeeds, you can directly call the upload success step , In this paper uploadProgressHandler Method