I added an onclick event to this green box but it did not work

Question

Onclick not working for my code
https://code.sololearn.com/W6LGd6lSvZmu/?ref=app
PanicS

Answer 1

write "getElementById" in camelCase

Answer 2

function mtsc() {
var x = document.getElementById("bes");
x.style.display="none";
}

Answer 3

The result of getElementByTagName is an array so you should use a loop such as for or foreach.
In your case:

for(var i of d){
i.onclick = function (){
a.style.display = "block";
}
}

Answer 4

Thanks zexu knub and JaScript it was camel case problem

Answer 5

zexu knub it says type error undefined

Answer 6

D Doyen use CAPS for ById

Answer 7

https://en.m.wikipedia.org/wiki/Camel_case