How to Write a Comment in JavaScript

Writing comments in JavaScript is an important part of code maintenance. It not only provides a better understanding of your written codes, but it also makes it easier for other developers to understand it as well.

Code Snippet for Writing Comment in JavaScript

In JavaScript, you can write a comment in two ways:

// This is a single-line comment

/* This is a 
multi-line comment */

Code Explanation for Writing Comment in JavaScript

1. Single-Line Comment: In JavaScript, a single-line comment is created by preceding your comment with two forward slashes (//). Any text following // on the same line will be ignored and treated as a comment by JavaScript. Typically, you’ll use single-line comments for brief notes about complex code or for temporarily disabling a line of code.

// This is a single-line comment
let x = 5; // Here, we declare a variable named x and assign it a value of 5

2. Multi-Line Comment: If you want to write a lengthy description or temporarily disable a block of code, you can use a multi-line comment. A multi-line comment starts with /* and ends with */. Everything between /* and */ will be ignored by JavaScript.

/* This is a
multi-line comment */

/* let x = 5;
let y = 6;
let z = x + y; Here, we are disabling multiple lines of code */

Remember, writing comments is crucial in the programming world. They provide context, prevent confusion, and make your code easier to understand and maintain both for yourself and others.