Change Content - Javascript

Change html element content using pure javascript author(s): Deepu Mohan Puthrote (WarFox)

HTML

<html>

<body>
	<button id="test">Click here</button>
	<h1 id="data"></h1>
	<script>
	document.getElementById("test").addEventListener("click", function(){
	document.getElementById("data").innerText = "Hello There!!!";
});
	</script>
</body>

</html>