Adding laravel CSRF token with form data

While uploading an image via wysiwyg editor I need to pass the Laravel CSRF token with the FormData(). But it seems like it fails or it does not add the csrf token using the append() method.

Here is my code:

  function uploadImage( image ) {
    var data = new FormData();
    data.append( "image", image );

    data.append( "csrfToken", Laravel.csrfToken ); // <- adding csrf token
    // Laravel.csrfToken will return the csrf token.

    console.log( data.entries() );
    $.ajax ({
      data: data,
      type: "POST",
      url: "/article/store/image",
      cache: false,
      contentType: false,
      processData: false,
      success: function(url) {
        var image = IMAGE_PATH + url;
          $( '#editor' ).summernote( "insertImage", image );
        },
        error: function( data ) {
          console.log( data );
        }
    });
  }

Its not adding the laravel csrf token with the form data because still I am getting an error

TokenMismatchException in VerifyCsrfToken.php line 68

How to add the token with the form data?

via Chebli Mohamed