Javascript function that checks if the textarea scroll has been moved

Question

How to make a Javascript function that checks whether the scroll of a textarea (this textarea has a disclaimer) has been moved.

If the user moves the scroll, enable a div with the continuation of a registration form.

Follows the code:

<script>
document.getElementById('id').onscroll = function(){
   alert('foi movido');
}
</script>

Answer 1

In pure Javascript

window.onload=function(){
    document.getElementById('id').onscroll = function(){
       alert('foi movido');
    }
}

Or you can also use this command from jQuery - .scroll

$("#id").scroll(function() { alert('Foi movido') });