Bootstrap modal dialog, show.bs.modal event relatedTarget is undefined. How can I get clicked element?

Question

Button invoked modal dialog: When button is clicked, event is fired the resulting event reference e.relatedTarget is undefined. So, how can I get the invoking button from the handler? e does not seem to contain any reference to the invoking button.

<!-- Button trigger modal --> <button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">   Launch demo modal </button>  <!-- Modal --> <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">   <div class="modal-dialog">     <div class="modal-content">       <div class="modal-header">         <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>         <h4 class="modal-title" id="myModalLabel">Modal title</h4>       </div>       <div class="modal-body">         ...       </div>       <div class="modal-footer">         <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>         <button type="button" class="btn btn-primary">Save changes</button>       </div>     </div>   </div> </div> 

jQuery:

$('#myModal').on('show.bs.modal', function (e) {   console.log(e.relatedTarget) // do something... }) 

Reference: http://getbootstrap.com/javascript/#modals

Answer 1

Thanks Geo1004.. I was already using JS to trigger the "show" event on the modal, but I was missing the second argument. So the event.relatedTarget was undefined.

If anyone else is going the JS route (instead of using data attributes) I would make sure you are sending the button as a jQuery object -

$( "#myModal" ).modal( "show", $( "#buttonBeingClicked" ) ); 

Answer 2

Take a look at the following Bootply example.

When run the show event seems to include a proper reference to e.relatedTarget.

$('#myModal').on('show.bs.modal', function (e) {     var button = e.relatedTarget;     if (button != null)     {         alert("Launch Button ID='" + button.id + "'");     } }) 

Take a look at the Bootply example to see if your own code deviates from it. (I copied the original Bootstrap sample code snippet directly from the link that you provided.)

I hope this helps. Good luck.