CODE EXAMPLE FOR JAVASCRIPT

multiple image upload in react js

import * as React from "react"

class ImageUpload extends React.Component {
  state: {
    files: []
  }

  fileSelectedHandler = (file: any) => {
    let addedFiles = this.state.files.concat(file)
    this.setState({ files: addedFiles })
    console.log("upload file " + file.name)
  }

  render() {
    return (
      < form >
        <div>
          <h2>Upload images</h2>
        </div>
        <h3>Images</h3>
        <input type="file" onChange={this.fileSelectedHandler} />
      </form>
    )
  }
}

export default ImageUpload