Answers for "window event fully loaded page"

js on page loaded

window.onload = function() {
  yourFunction(param1, param2);
};

javascript - How to execute a function when page has fully loaded?

That's called load. It came waaaaay before DOM ready was around, and DOM ready was actually created for the exact reason that load waited on images.

window.addEventListener('load', function () {   alert("It's loaded!") })