Is there a way to add JS to a Marketo form button?

[future_vision]

I am looking for a way to add a datalayer push to a Marketo form button. I thought I had seen a way to add code awhile back in design studio but I must have been mistaken. Is there a way to push a datalayer event with the click of the form button?

[SanfordWhiteman]

"Adding to the button" isn't the way to think about it. You're adding code that fires upon form success.

You can do anything you want in onSuccess:

MktoForms2.whenReady(function(readyForm){
  readyForm.onSuccess(function(submittedValues,originalThankYouHref){
    // do whatever you want here, then set
    // document.location.href = originalThankYouHref 
    // when other tasks are done
    return false;
  });
});

[future_vision]

I already have code in place for a datalayer push for the onsuccess event. I guess what I was looking at were clicks regardless of whether the form was submitted successfully or not but I can see just tracking successful clicks the way you described.

[Ishita_Chawra]

Another discussion on custom form buttons, could be helpful Solved: Custom Form Buttons - Marketing Nation (marketo.com)