Definition of DOM Custom Events
An event can be synthetic, which are created by the programmer, and they can also be fired by the browser. They are everywhere in a webpage. Using a web page is essentially just a series of events. Events allow the developers to get an idea of what a user’s experience was like on their website. When there is no event to handle a certain problem on a web page, we can implement custom events to help solve those problems.
How to Create DOM Custom Events
To create a Custom Event, you can use the Event constructor, or you can use the CustomEvent constructor. You can pass custom data to the CustomEvent() interface and use the detail property to add any data you want. You can use eventListeners to catch whenever an event fires and then you can add a function to make it do something.
Why DOM Custom Events Are Used
DOM Custom Events are used because they allow us to go outside of the boundaries of native events like onClick. They allow us to add functions to events and pass parameters to the event constructor and have more control of what we want to happen in certain situations.
Summary of Documentation
We can use events in JavaScript to make our web pages more dynamic and interesting to use. There are many native events in JavaScript like onClick that are very useful. When we come across a situation that does not have an event for it, we can use Custom Events to make our own. We use these events to update our webpage based on what the user does.