medium-ocr-react-handlechange

App.js

handleChange = (event) => {
  if (event.target.files[0]) {
    var uploads = []
    for (var key in event.target.files) {
      if (!event.target.files.hasOwnProperty(key)) continue;
      let upload = event.target.files[key]
      uploads.push(URL.createObjectURL(upload))
    }
    this.setState({
      uploads: uploads
    })
  } else {
    this.setState({
      uploads: []
    })
  }
}