<!DOCTYPE html>
<html>
<body>
<h3>A demonstration of how to access a STRONG element</h3>
<p>Click the button to set the color of <strong id="myStrong">this strong text</strong> to red.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
var x = document.getElementById("myStrong");
x.style.color = "red";
}
</script>
</body>
</html>