When document.readystate == complete is the same when onload loads?

Question

In Internet explorer, when onreadystatechange is started and the readystate switches are complete, is it the same as when the onload event is fired? Have all your requests completed by this time?

Answer 1

document.onreadystatechange usually more optimal than window.onload , because it fires before all external resources, such as images, are loaded. However, at the moment this is not very well supported (but if you are only concerned about IE, then this is not a problem).

See: https://developer.mozilla.org/en/DOM/document.onreadystatechange

Or, for IE: http://msdn.microsoft.com/en-us/library/ms536957(v=vs.85).aspx

Answer 2

document.readyState is a property and window.onload is an event

http://www.w3schools.com/jsref/prop_doc_readystate.asp

http://www.w3schools.com/js/js_events.asp