<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-git.js"></script>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Set value in input text using jQuery.</title>
</head>
<body>
<p>Input your Name :</p>
<input type="text" name="pname">
<input id="button1" type="button" value="Click to set default name" />
</body>
</html>
HTML Code :
JavaScript Code: