Tryit Editor v2.9

Edit This Code:

<!DOCTYPE html>
<html>
<body>

<p id="demo">Click the button to change the color of this paragraph.</p>

<button onclick="myFunction()">Try it</button>

<script>
function myFunction() {
    var x = document.getElementById("demo");
    x.style.color = "red";
}
</script>

</body>
</html>