Web Reference: Custom events let you create your own event types, attach data to them, and dispatch them through the DOM just like native events. Custom events follow the same propagation rules as built-in events. The following function highlights an element by changing its background color to yellow: To execute a piece of code after highlighting the element, you may come up with a callback: The following calls the highlight() function and adds a border to a element: To make the code more flexible, you can use the custom event. Jul 23, 2025 · How to Create and Trigger Custom Events? To create and trigger a custom event in JavaScript, we typically follow these steps: Create an Event: Use the Event constructor to create a new event. Add an Event Listener: Attach an event listener to an element or document to listen for the custom event.
YouTube Excerpt: Demonstrates how
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