What is the purpose of JavaScript events?

JavaScript events play a critical role in creating interactive web applications by allowing the webpage to respond dynamically to user actions. Events are actions that occur in the browser, such as clicks, key presses, mouse movements, or changes in form data. When a user interacts with a web page—like clicking a button or submitting a form—the corresponding event is triggered, and developers can write JavaScript code to respond to these actions.

This interactivity enhances the user experience, making web applications more engaging and user-friendly. For example, validating user input in real-time through events can provide immediate feedback before form submission, while showcasing animations or changes in content can make a site more visually appealing.

In contrast, while there are options related to data storage, input validation, and site performance, they do not capture the primary function of events. Events are fundamentally about responding to user interactions, which is essential for developing rich and interactive web experiences.