Javascript to trigger multiple elements in Storyline

I am trying to get an element to have a listener, and I used most of your code, but missing something. Can you diagnosis this.

var TopButton = document.querySelectorAll("[data-acc-text='ImmEnroll']");
var player = GetPlayer();


TopButton.addEventListener("mouseup", MouseUpHandler);


function MouseUpHandler(e)
{
 var e = window.event || e;
 alert("Mouse");
}