JavaScript Mouseover
Syntax
element.addEventListener('mouseover', function() {
// code to execute when the mouse is over the element
});
Example
<!DOCTYPE html>
<html>
<head>
<title>JavaScript Mouseover Example</title>
</head>
<body>
<h1 id="heading">Hover over me</h1>
<script>
var heading = document.getElementById('heading');
heading.addEventListener('mouseover', function() {
alert('You are hovering over the heading!');
});
</script>
</body>
</html>
Output
When the user hovers over the Heading, an alert box will appear with the message "You are hovering over the heading!"
Explanation
The addEventListener() method is used to attach an event handler to an element. In this case, we're attaching a 'mouseover' event and specifying a function to execute when the mouse pointer enters the element.
Inside the event handler function, we're using the alert() method to display a message to the user.
Use
This technique can be used to provide rich feedback to users when they interact with a webpage. For example, you could change the background color of an element when the user hovers over it.
Important Points
- The
mouseoverevent is fired when the mouse pointer enters the element. - This technique can be combined with other JavaScript events to create interactive web pages.
- Be careful not to overuse this technique as too many alerts can become annoying to users.
Summary
JavaScript mouseover event is used to execute a code when the user hovers over an element with the mouse pointer. This technique can be used to provide rich feedback to users and create interactive web pages.