Execute a script when an element has been dragged to a valid drop target in HTML?


When an element has been dragged in HTML to a valid drop target, the ondragenter attribute fires.

Example

You can try to run the following code to implement the ondragenter attribute −

<!DOCTYPE HTML>
<html>
   <head>
      <style type = "text/css">
         #boxA, #boxB {
            float:left;padding:10px;margin:10px; -moz-user-select:none;
         }
         #boxA { background-color: #6633FF; width:75px; height:75px; }
         #boxB { background-color: #FF6699; width:150px; height:150px; }
      </style>
      <script type = "text/javascript">
         function dragStart(ev) {
            ev.dataTransfer.effectAllowed = 'move';
            ev.dataTransfer.setData("Text", ev.target.getAttribute('id'));
            ev.dataTransfer.setDragImage(ev.target,0,0);
            return true;
         }
      </script>
   </head>
   <body>
      <center>
         <h2>Drag and drop HTML5 demo</h2>
         <div>Try to drag the purple box around.</div>
         <div id = "boxA" draggable = "true"
            ondragstart = "return dragStart(ev)">
            <p>Drag Me</p>
         </div>
         <div id = "boxB">Dustbin</div>
      </center>
   </body>
</html>

Updated on: 31-May-2020

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