Why this showing error?

Question

getComputedStyle method not working....

https://code.sololearn.com/WrhKA3hBNUf0/?ref=app

Answer 1

console.warn() does not seem to output anything. You could try console.log() instead.

Answer 2

The html is ot fully loaded when your js tries to find the htnl elements.

You can put your js inside of

window.onload = function() {
// your js
}

Answer 3

Still not working friend!