Change content in JavaScript
In JavaScript, you can manipulate HTML by selecting elements using document method `getElementById` and then modifying their properties or contents using JavaScript code.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Change content in a webpage using JavaScript</title>
</head>
<body>
<h1 id="demo">Hello Friends</h1>
<p id="para">How is JavaScript?</p>
<button onclick="document.getElementById('demo').innerHTML='Welcome to JavaScript'">
Change Heading</button>
<button onclick="document.getElementById('para').innerHTML='It Is Really Fun'">
Change Paragraph</button>
</body>
</html>