But_1 is working , but its not performing the function.
its giving an error cannot set property of null
in the browser console.
I have tried to check the javascript by console.log('script is working') in the function add(), and its not doing anything
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="index.css">
<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>
<script>
let Count_el = document.getElementById('c1')
let count = 0
function add(){
count +=1
Count_el.innerHTML = count
}
</script>
<h1 id='heading'>Count</h1>
<h2 id="c1">0</h2>
<button id="but_1" onclick="add()">Increment</button>
<br>
<button id="but_2" onclick="">Save</button>
<br>
<p id="data">Previous Entries: </p>
</body>
</html>