Try it Editor: html_syntax

Edit This Code :



<!DOCTYPE html>
<html>
<body>

<p id="Demo">This is paragraph 1.</p>
<p id="demo">This is paragraph 2.</p>

<script>
// Only paragraph 2 will be overwritten
document.getElementById("demo").innerHTML = "HELLO.";
</script>

</body>
</html>

Result :

html_syntax_javascript