Comments in JS

In JavaScript, Comments are used to give information about the code, so that users can easily understand the code.
Comments are ignored by the JavaScript interpreter and are meant for human readers, including developers and collaborators, to understand the code.

There are two types of comments in JS:

Single line comment
Multiline comment

Single-line comment:

Single-line comments are used to add comments to a single line of code
They are represented as '//'

Example:

<script>  
// It is single line comment  
document.write("Welcome to Quipoin");  
</script>

<html>

<body>
   <script>
      var a = 10;
      var b = 10;
      var c = a + b;//It adds values of a and b variable  
      document.write(c);//prints sum of 10 and 20  
   </script>
</body>

</html>

Output:

Multiline comment:

Multiline comments are used to add both single-line and multiline comments.
It is represented as starting with /* and ending with */.

Example:

/* your code here  */

<html>

<body>
   <script>
      /* It is multi line comment.  
      It will not be displayed */
      document.write("Welcome to Quipoin");  
   </script>
</body>

</html>

Output:

Welcome to Quipoin