<!DOCTYPE html>
<html>
<body>
<iframe width="100%" height="300px" src="demo_iframe.htm" name="iframe_a"></iframe>
<p><a href="../index.html" target="iframe_a">W3Schools.com</a></p>
<p>When the target of a link matches the name of an iframe, the link will open in the iframe.</p>
</body>
</html>