The onload event in JavaScript triggers when a web page loads in a browser.
Note - The onload Event is defined in BODY element.
Here is an example demonstrates onload event in JavaScript:
<!DOCTYPE HTML>
<html>
<head>
<title>JavaScript onload Event</title>
</head>
<body onload="alert('Welcome to JavaScript from codescracker.com!')">
<h3>JavaScript onload Event Example</h3>
<p>You will see an alert box showing an alert message on body load.</p>
</body>
</html>
Here is the sample output of the above JavaScript onload event example:
