anchor.diff:  }
   
   drag(MouseEvent event) {
  -  print(event.target.id);
     event.dataTransfer.setData("text", event.target.id);
   }
   
  
positive.code: 
  import 'dart:html';
  import 'dart:convert';
  
  removeImage(event) {
    event.target.remove();
  
negative.code:   CanvasRenderingContext2D context = canvas.getContext("2d");
    CanvasElement sourceCanvas = querySelector("#"+data);
    double finalHeight = sourceCanvas.height * (canvas.width / sourceCanvas.width);
    context.drawImageScaled(sourceCanvas, 0, (canvas.height - finalHeight - powerHeight), canvas.width, finalHeight);
  }
  
  addImage(event) {
  