what is Window.onload()

Question

I am alittle thrown off by the the window,onload() during the try it yourself section.

Answer 1

The onload event occurs when an object has been loaded.

The Window interface represents a window containing a DOM document.

So, onload can also be used with other objects. For window, by default, it is fired when the entire page loads, including its content (images, css, scripts, etc.)