What is window.event in JavaScript?

I am having trouble understanding what window.event does in JavaScript. It seems to be used without any explicit definition. The same applies to document.event.

What exactly is the difference between these two? Do they accept any arguments, and how are they used in practice when dealing with javascript window event?

Hi,

In older versions of Internet Explorer (before IE 9), window.event was used to represent the current event being handled.

For example:

function handleClick() {
var event = window.event; console.log(event.type); // Outputs the event type (e.g., 'click')
}

However, this is outdated and not recommended for modern browsers, as it only worked in IE. Modern browsers provide the event object as a parameter to event listeners.