How to Write Comment in JavaScript

Understanding how to write comments in JavaScript is a critical skill for any coder. This article provides a simple overview of the process along with an easy-to-understand code snippet.

Code snippet: Creating a Comment in JavaScript

JavaScript offers two simple methods for creating a comment in your code. Either you can create a single-line comment or a multi-line comment. Here’s an example of each:

// This is a single-line comment 

/* 
This is a 
multi-line comment 
*/

Code Explanation for Creating a Comment in JavaScript

The process for creating a comment in JavaScript is incredibly simple and straightforward.

1. Single-Line Comment: To create a single-line comment, all you have to do is put two slashes // before the text of your comment. Everything written in the same line after the slashes will be treated as a comment by the JavaScript interpreter. They do not affect the operation of the code and are not visible in the output.

// This is a single-line comment 

2. Multi-Line Comment: If you want to write a longer comment that spans multiple lines, start your comment with a slash followed by an asterisk /* and end it with an asterisk followed by a slash */. Everything written between these markers will be treated as a comment, regardless of how many lines it spans.

/* 
This is a 
multi-line comment 
*/

Comments are essential in programming as they help you and others understand the code if it needs to be reviewed or updated in the future. They add beneficial readability to your code, ensuring that any programmer in the future can understand the intent and functionality of your initial write-up. Now you know how simple it is to add comments to your JavaScript code. Happy coding!