JS Comments - Javascript

Introduction

JavaScript comments are a way to add explanatory notes to your code that are ignored by the JavaScript interpreter. These comments help other developers understand your code and make it easier to debug and maintain.

Types of Comments

There are two types of comments in JavaScript: single-line comments and multi-line comments.

Single-line comments

Single-line comments start with two forward slashes (//) and are used to comment on a single line of code:

// This is a single-line comment
var x = 5; // Assign 5 to variable x

Multi-line comments

Multi-line comments start with /* and end with */ and are used to comment on multiple lines of code:

/* This is a
   multi-line comment */
var y = 10; /* Assign 10 to variable y */

Best Practices

Here are some best practices to follow when writing comments in JavaScript:

• Write comments that explain the purpose of the code, not what the code does.
• Use comments sparingly. If your code is well-written and easy to understand, you may not need many comments.
• Avoid writing comments that are redundant or obvious.
• Use clear and concise language.
• Use single-line comments for short comments and multi-line comments for longer comments.

Conclusion

JavaScript comments are an important tool for developers to use to make their code more understandable and maintainable. By following best practices and writing clear and concise comments, developers can make their code more accessible to others and themselves.