How to use the Marketo forms events in GTM?

[Jamie_West]

I would like to track Marketo form events in GTM on my website but am unsure of what steps to take. Could I please get assistance from an expert?

[SanfordWhiteman]

The pattern is the same as when using GA to log successful form submissions, only with GTM you'd use eventCallback where GA uses hitCallback.

MktoForms2.whenReady(function(form){
  form.onSuccess(function(vals,tyURL){
    dataLayer.push({
      'event' : 'formSubmit',
      'eventCallback' : function() {
        document.location.href = tyURL;
      },
      'eventTimeout' : 3000
    });
    return false;
  });
});

[Jamie_West]

Hi Sanford - is there a way to do this within Tag Manager without adding code to the website?

[SanfordWhiteman]

Probably.  

But wherever you put the script, this code must run and not the built-in GTM HTML form tracking.