DOM selector help

Question

Am I using the selector wrong?

In HTML. <p id = "demo"> test <p>
In JavaScript. El = document.getElementById("demo");

But if I do alert (El.innerHTML) I get an error null, while it worked at www3schools

https://code.sololearn.com/WNJrsk940ULv/?ref=app

Answer 1

Or replace lines 21-22 with:
onload=()=>demo.innerText = textje;

Answer 2

put your code inside
window.onload =function(){

//your code

}

Answer 3

Because js loads faster than html, and therefore does not see "demo"

Answer 4

onclick works, it's just that count reached 15.

Answer 5

You need to zero out all variables at the end of the "output" function: count=countFunction=0;
check=[];

And now remove onload.

Answer 6

To avoid confusion, initialize these variables on the first line with let and they will still be visible in all functions.

And once again: "onload is not needed since you are accessing the html tag after the html document is fully loaded using a function call on click".

Answer 7

Now the onclick doesn't work, prolly need also onload?

Answer 8

Dooh , thanks!

Answer 9

Where do I put count = 0 when I click button,

Answer 10

Yes , thanks but I needed a onload the first time , so if you use global variable in a function they are the same in the 2nd function? If you call the second from the first?