Compile Error

Question

When I run this, it is saying my .click function is set to null. I'm so lost, is it because sololearn does not recognize Math as a built-in function
https://sololearn.com/compiler-playground/Wl235vnW0Iji/?ref=app

Answer 1

Javascript can only fetch the html element once the body is fully loaded ‐ not before that.

wrap all the js code in

window.onload = function(){
// here goes all js
}

Answer 2

it depends on the browser and the location of the script in the html

Answer 3

Okay, but if I have an external file and put that src in the html, I will not have to do that. Is that correct?