Reference Error on js console

Question

https://code.sololearn.com/WLHCsy5eiuK6/?ref=app

Answer 1

Nice job with the CSS selectors, but you still to have use quotation marks. document.querySelector("button.first")

Answer 2

ODLNT I updated but It still gives some kinda error

Answer 3

Fatih Yalçın

window.onload = function(){
...your code goes here
}

Answer 4

It worked thank you so much

Answer 5

You're welcome