I have tried every format of doing this, and nothing seems to work, please help!
HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="script.js"></script>
</head>
<body>
<button id="btn">Click me</button>
</body>
</html>
JavaScript:
let btn = document.getElementById('btn');
btn.addEventListener('click', func());
function func(){
alert('hello');
};
The error it returns is:
script.js:3 Uncaught TypeError: Cannot read properties of null (reading 'addEventListener') at script.js:3:5
Js script should be executed after template fully loaded
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<button id="btn">Click me</button>
<script src="script.js"></script>
</body>
</html>