How to get files before upload？ about cj-upload

[wanliyunyan]

@audiolion thank you!I know what I should do.

 onFiles={files => {
     const {name,size} = files[0];
     // check size
     const isLt2M = size / 1024 / 1024 < 2;
     if (!isLt2M) {
      //
       }
     // check extension name
     const index = name.lastIndexOf('.');   
         if(index===-1){
             //
          }else if(index>-1){
               //
            }
       // upload
        onFiles(files)
 }}

[audiolion]

尝试使用 accept prop:

uploadProps={{
  accept: '.pdf,.doc,.docx,.txt,.rtf',
}}

[wanliyunyan]

@audiolion if i want to change
this option,that you said do not solve the problem fundamentally, and if i want to limit size of the file, how to do?

[audiolion]

if you want to limit the size of the file, you can check it before you upload using the File API

<UploadField
    onFiles={files => {
      if(files[0].size > 30000) this.setState({ sizeError: true});
    }}
/>