Final answer:
The event that occurs when a user clicks on an HTML element is called the onclick event. It is used to define JavaScript code to run upon a click, enabling interactive behavior on web pages.
Step-by-step explanation:
When a user clicks on an HTML element, the event that occurs is the onclick event. This event is triggered as part of the Document Object Model (DOM) events system in web browsers. Using the onclick attribute within an HTML element's tag, developers can specify JavaScript code to run when the element is clicked by a user. This is commonly used to create interactive web pages that respond to user actions in real time.
Examples of onclick Event Use:
- Adding an item to a shopping cart when a "Add to Cart" button is clicked.
- Opening a modal window when a user clicks on an image.
- Changing the content displayed on a page based on the user's selection.