About Lesson
An event is an important part of JavaScript.A web page responds according to an event that occurred. Some events are user generated and some are generated by API. An event listener is a procedure in JavaScript that waits for an event to occur. A simple example of an event is a user clicking the mouse or pressing a key on the keyboard. The addEventListener() is an inbuilt function in JavaScript which takes the event to listen for, and a second argument to be called whenever the described event gets fired. Any number of event handlers can be added to a single element without overwriting existing event handlers.
Syntax:
element.addEventListener(event, listener, useCapture);
Exercise Files
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