Force a window.onload event in javascript

Question

Ok, I am going to rephrase my request as I think based on some of the answers, it got convoluted. All I am looking for is if there is a javascript command to fire the onload event from the javascript in the parent. A line of code such as: document.getElementById('FrameID').fire.onload(); or if this cannot be done.

I am brainstorming an application where I am going to preload some iframes with url's, say 10 of them. I am then going to rotate them by hiding and displaying the frames. I want to be able to fire a window onload event after the active frame is displayed without reloading the page so the page will act as if it is fresh if it has an onload event. Can I do this? The pages may or may not have a window onload event.

Answer 1

This is the current method for re-emitting the load event:

dispatchEvent(new Event('load'));

https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Creating_and_triggering_events

Browser compatibility:

• Chrome: 15+
• Firefox: 11+
• Microsoft Edge: all versions
• Opera: 11.60+
• Safari: 6+
• Internet Explorer: none (see Dave's answer)