How to set {{lead.ID}} to return on Form Complete or Submit on Web Page using Marketo Embed Form

[Jeff_Leong]

Hi There, new to board.  

We have marketo embed forms on our site (via CMS, e.g. AEM or SiteCore) and we'd like to track the {{lead.ID}} when the user submits the form.  The thank you pages are not Marketo templates but I have read on these boards that it is possible to return the {{lead.ID}} via JS on a non Marketo templated page, using Marketo embed forms.  

I've tried a few times with no luck.

Example below doesn't seem to fetch the lead.ID

$(document).ready(function(){
  var test = "{{lead.ID}}";
  window.decodedVariable = $('<textarea/>').html(test).text();

Does anyone have any guidance around this.  The purpose of tracking lead.id is for Analytics purposes.

Thanks in advance & Kind Regards

[SanfordWhiteman · Accepted solution]

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The thank you pages are not Marketo templates but I have read on these boards that it is possible to return the {{lead.ID}} via JS on a non Marketo templated page, using Marketo embed forms. 

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This is definitely incorrect out-of-the-box, don't know where you read it.

If  (but only if) you use my separate form Pre-Fill JS you'll be able to read the field from your non-Marketo origin.

Note the Lead ID is numeric. There's no need to HTML-decode it, as it's not possible for it to contain characters requiring encoding in the first place.