Error in js code

Question

https://code.sololearn.com/W0yvk4bJgvMs/?ref=app
Can anyone correct my JS code. I want to change href link but it's not working

Answer 1

You're making it way too difficult.

var el = document.getElementById('demo').getElementsByTagName("a");
el[0].href='https://www.sololearn.com';

Answer 2

Thank you very much. I made it that way to practice using 'childNodes'. With ur answer i learned new method.:)