Why does this eŕror occurs ?

Question

Hello can you help me ? I don't understand what's wrong, it writres "Cannot read property addEventListener of null"
https://code.sololearn.com/W5TKLRB03i55/?ref=app

Answer 1

It's because t1 in the starting points to the Audio object
And in the end you use the same variable to point to the rect element
So change the variable name

Answer 2

Just wrap your method with a function of onload event

onload = function(){
var t = document.querySelector('rect');
t.addEventListener('click', function(){
t1.play();
});

}

Answer 3

Ok thanks but now it does not read my function "t1.play is not a function"

Answer 4

Thanks it works :)