HTML Event Attributes

HTML event attributes are part of the HTML markup that enable you to define specific actions or behaviors that should occur when a user interacts with an element on a web page. These interactions can include a wide range of events, such as mouse clicks, keyboard inputs, page load, form submissions, and more. Event attributes are used to create a responsive and dynamic user interface, making web pages more engaging and functional.

In the below PDF we discuss about HTML Event Attributes in detail in simple language, Hope this will help in better understanding.

HTM programming

How to Use HTML Event Attributes:

Using HTML event attributes is relatively straightforward. You simply add the attribute to an HTML element and set its value to a JavaScript function. Here’s a basic example of the onclick attribute:

<button onclick="myFunction()">Click me</button>

In this example, when the button is clicked, the myFunction JavaScript function will be executed. You can define these functions in a <script> tag in the HTML document or in an external JavaScript file.

Let’s explore a few practical examples to see how HTML event attributes can be applied:

Image Gallery Slideshow:
You can create a simple image slideshow with the onclick attribute, changing the image source with each click event.

<img id="myImage" src="image1.jpg" onclick="changeImage()">
let currentImage = 1;
const imageCount = 3;

function changeImage() {
currentImage = (currentImage % imageCount) + 1;
document.getElementById("myImage").src = "image" + currentImage + ".jpg";

Common HTML Event Attributes:

There are several event attributes in HTML, and they can be applied to various HTML elements. Here are some common HTML event attributes:

  • onclick: This attribute specifies what action should be taken when an element is clicked, typically used with buttons, links, and images.
  • onmouseover: It defines an action to occur when the mouse pointer moves over an element, often used to trigger hover effects.
  • onmouseout: This attribute is used to specify an action when the mouse pointer leaves an element.
  • onkeydown and onkeyup: These attributes determine actions when a key is pressed and released, respectively.
  • onload: This attribute specifies actions that should occur when the web page finishes loading, such as initializing JavaScript functions.
  • onsubmit: It is used with forms to define what should happen when the user submits the form, often used for form validation.
  • onchange: This attribute is applied to form elements like input fields and select boxes, defining an action to occur when the value of the element changes.

Related Question

HTML Event Attributes are attributes added to HTML elements to define and specify the behavior of the element when certain events occur, such as a user clicking a button or moving the mouse over an image.


You can use an HTML Event Attribute by adding it to an HTML element as an attribute in the opening tag. For example, to specify an event handler for a button click, you can use onclick like this: <button onclick=”myFunction()”>Click me</button>.

An event handler is a JavaScript function that is associated with an HTML element and is triggered when a specific event occurs on that element. Event handlers are often defined using HTML Event Attributes.

Some commonly used HTML Event Attributes include onclick, onmouseover, onmouseout, onload, onchange, and onsubmit, among others. These attributes cover a wide range of user interactions and element behaviors.


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