<!DOCTYPE html>
<html>
<head>
<title>background change</title>
</head>
<body>
<button id=”tio”>click</button>
<script>
document.getElementById(“tio”).onclick= function(){
alert(‘hello, i would love to know u more.’)
}
</script>
</body>
</html>
OUTPUT:

This is the output of the alert code above.
