Hi Sam

This should work with jQuery. I think you need to set a delay or put the code after the Knockout has initialized?

If you read the JS code near the bottom of the template, you'll typically find the Knockout initializes around the place where you find the code (search for "databind()" ):

xxx.databind()

You can then do your work here after the databind. Make sure you are still targetting the correct element if you are selecting by ID.

So I tried that but it didn't work.  So in that template, are you saying that i should put my code after the checkoutContainer.databind()?  When I do that it doesnt' appear to work.  An example of my code is 

$("input[name=StudentName]").val("Bob Jones").  Is that correct?  Thanks for your help!

Yes, put it after the checkoutContainer.databind()

You can check your jQuery code is valid first by going to your checkout page and opening up the developer tool (F12) and the paste your Javascript into the Console and hit Enter. See if your script actually changes the textbox value. Normally, I think you need a quote around the 'StudentName' attribute value. Give it a try.

$("input[name='StudentName']").val("Bob Jones")

Yes, put it after the checkoutContainer.databind()

You can check your jQuery code is valid first by going to your checkout page and opening up the developer tool (F12) and the paste your Javascript into the Console and hit Enter. See if your script actually changes the textbox value. Normally, I think you need a quote around the 'StudentName' attribute value. Give it a try.

$("input[name='StudentName']").val("Bob Jones")