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index.html
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index.html
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<!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>javascript based website</title>
<style>
body{
color:blue;
display: flex;
flex-direction: column;
justify-content: center;
height: 100vh;
align-items: center;
}
</style>
</head>
<body>
<button id='btncount'>-</button>
<script>
const element = document.querySelector('#btncount');
element.addEventListener('click',counterIncrement,false);
let counter=0;
//console.log(counter);
function counterIncrement(){
counter=counter + 1;
console.log(counter);
}
//counterIncrement();---If we call the function or doesn't call it works beacuse it takes from addevent listener.
</script>
</body>
</html>