javascript Drag/Drop - IE not getting it right.

[jamfitz001]

I'm adapting some straightup examples of  Drag / Drop from W3school.   Everything seems to work with other Browsers as expected.  IE is not working.

I have an HTML object on my page:

<div  id="1717" class="mydrag_obj" draggable='true' ondragstart='func_dragstart(event)'>  

      <a href="https://www.yahoo.com" target="_blank">  

                  <div class="row_1"></div>

                  <div class="row"_2"></div>

     </a></div>

JavaScript:

func_dragstart(ev) { ev.dataTransfer.setData("text/plain", ev.target.id);}

When I drop -

func_dropped_dropzone (ev) { ev.preventDefault();  alert ('card_id- ' + ev.dataTransfer.getData("text")); return true; }

For all browsers  ev.dataTransfer.getData("text"))  

...the alert =   card_id=1717   

but for

  IE  the alert =   card_id="https://www.yahoo.com"

can someone explain what I need to do to make IE return the ID of the DIV?