<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css">
<script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
</head>
<body>
<div data-role="page">
<div data-role="header">
<h1>Text area</h1>
</div>
<div data-role="main" class="ui-content">
<form method="post" action="demoform.asp">
<div class="ui-field-contain">
<label for="info">Additional Information:</label>
<textarea name="addinfo" id="info"></textarea>
</div>
<input type="submit" data-inline="true" value="Submit">
</form>
<p><b>Note:</b> The text area will automatically grow to fit new lines as you type some text. Try to fill the area with some text and see how it works.</p>
</div>
</div>
</body>
</html>