Event

Event is a browser signal about something happening on your website. Javascript can react to it and perform some changes to site objects, when a certain event occurs. There are various HTML events, like onclick (the action is performed when user click on some item), onmouseover (the action is performed on the cursor hover), onload (the action starts after the page content was fully loaded), etc. Click here to check the full list of the HTML DOM events. So, an event is a way of the website to respond to changes, performed by user, e.g. when the user hovers a menu item, it changes its color or resizes. Feel free to visit this page to try live examples of events handling and check for more info.