How do I reference a control when I set the JavaScript Client ID in Nintex Forms 2013 On-Prem?

[#1]

There is a place to provide a client id for a form control in JavaScript, but how in the world do I begin? I created my control and then attempt NWF$("#myControl") -- nothing returned. There is no variable with the name myControl.

Where are simple examples of JavaScript uses? An API? Something?

[emha · Accepted solution]

it should be used as NWF$("#" + myControl)

there is no official API/document. you just can search through the forum or learning center.

there is a video how to write javascript code in nintex for beginners

http://learning.nintex.com/lms/index.php?r=player&course_id=110#training