JavaScript comments are used to explain the JavaScript code logic. JavaScript comments are ignored by JavaScript translators. It makes JavaScript code more readable.
Types of JavaScript comments:
1. Single-line Comment
2. Multi-line Comment
JavaScript Single-line Comment:
The double forward slashes (//) are used for Single line comments. Anything between // to the end of the line will be ignored by the JavaScript translator.
Syntax:
<script> //Single line comment JavaScript Code </script>
JavaScript Single-line Comment Example:
<html>
<body>
<script>
// Single line comment
document.write("Hello w3schools.com");
</script>
</body>
</html>
JavaScript Multi-line Comment:
The Multi-line comments start with a forward slash with an asterisk /* and end with an asterisk with a forward slash*/. Anything between /* and */ will be ignored by the JavaScript translator. It can be used to comment single as well as multiple lines.
Syntax:
<script> /* Multi-line comment This line will not execute */ JavaScript Code </script>
JavaScript Multi-line Comment Example:
<html>
<body>
<script>
/* Multi-line comment
This line will not execute */
document.write("Hello w3schools.com");
</script>
</body>
</html>