What is the meaning of events handling in JS?

Event handling in JavaScript refers to the process of detecting and responding to user interactions with a web page, such as clicking a button, hovering over an element, or submitting a form.

In JavaScript, events are represented by objects and are associated with elements on the page. When an event occurs, the JavaScript interpreter creates an event object that contains information about the event, such as the type of event, the target element, and the current state of the keyboard and mouse.

You can handle events in JavaScript by attaching event handlers to elements on the page. An event handler is a function that is executed when a specific event occurs. You can attach event handlers to elements using JavaScript event properties, such as onclick, onmouseover, or onsubmit, or by using the addEventListener() method.

Here's an example of how you can handle a button click event in JavaScript:

<button id="myButton">Click Me</button>

<script>
// Get the button element
var button = document.getElementById("myButton");

// Attach a click event handler to the button
button.addEventListener("click", function() {
  alert("Button was clicked!");
});
</script>

In this example, a button with the id "myButton" is defined in HTML, and a click event handler is attached to it using the addEventListener() method. When the button is clicked, the event handler function is executed, and an alert message is displayed.