Open an iFramed Marketo Form's Follow Up Page in the parent page

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In some cases, you may want an iframed Marketo form to open in the parent page.


Note: Please ensure that you have access to an experienced JavaScript developer.

Marketo Technical Support is not set up to assist with troubleshooting JavaScript.

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Add the following script to the src iframed page within a custom HTML block.

<script type="text/javascript" src="/js/public/jquery-latest.min.js"></script>
<script type="text/javascript">
     // set no conflict mode for jquery
   var $jQ = jQuery.noConflict();

       // all form submits will open in a new window




<script >

MktoForms2.whenReady(function (form) {

    var form = MktoForms2.getForm(FORM_ID_HERE);

    form.onSuccess(function (values, followUpUrl)

    { = followUpUrl; return false;




To figure out what the form id is, the easiest way is to look at the embed code. It is the 4 digit number on the second line.


Thank you for this useful piece of code.

I would like to understand, why in the case of FORMS 2.0 you need the line

    var form = MktoForms2.getForm(FORM_ID_HERE);

What would happen if you omitted this line and used the form parameter, that is available to call-back function?

You're right, Pavel.  There's no reason to retrieve the form via the form id if it's the same form you're already inside.  It's already a local var.

Thanks, Sanford, I am glad you confirmed my understanding. We have users that want to add more forms on their site through iframes and it is easier for them to just clone a container page with a universal script rather than make them edit the script every time they add a new form.