<!DOCTYPE html>
<html>
<body>
Favorite car:
<input type="button" id="myBtn" value="Volvo">
<p>Click the button below to change the text displayed on the input button above.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
document.getElementById("myBtn").value = "BMW";
}
</script>
</body>
</html>