Introduction
Comments will not be executed by JavaScript.Comments can be added to explain the JavaScript, or to make the code more readable.Single line comments start with //.
<html>
<body>
<h1 id="myH1"></h1>
<p id="myP"></p>
<script>
// Write to a heading:
document.getElementById("myH1").innerHTML="Welcome to my Homepage";
// Write to a paragraph:
document.getElementById("myP").innerHTML="This is my first paragraph.";
</script>
<p><strong>Note:</strong> The comments are not executed.</p>
</body>
</html>
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