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<!DOCTYPE html> <html> <body> <p><a id="myAnchor" href="../index.html">W3Schools</a></p> <p>Click the button to set the value of the rel attribute of the link above to "nofollow".</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("myAnchor").rel = "nofollow"; document.getElementById("demo").innerHTML = "The value of the rel attribute of the link above is now 'nofollow'."; } </script> </body> </html>