comment out multiple lines in javascript

Developing a habit of commenting in your codes plays a significant role in programming, particularly when working in a large team. In this article, we will learn how to comment out multiple lines in JavaScript.

Code Snippet Example

Just like any other programming language, JavaScript has its way of allowing comments. If you want to comment out multiple lines in JavaScript, you can use the following format:

/*
This is a multi-line comment.
This whole section will be ignored by the JavaScript interpreter.
You can write as much as you want in here
*/

This code snippet is an example of a multi-line comment. Everything in between the /* and */ is ignored by the JavaScript interpreter, and no output will be returned.

Code Explanation

Comments in JavaScript are pieces of code ignored by the interpreter. They are crucial for leaving notes for yourself and other developers, to understand the functionality of the code at a later date. Commenting out multiple lines of code in JavaScript is simple.

• Begin with /*: This tells the JavaScript interpreter that what follows should be considered a comment.
• Add all your comments: Write all the comments you need in multiple lines. This could be notes about what the code is doing, reminders for future changes, or anything else relevant to the code.
• End with */: This tells the JavaScript interpreter that the comment has ended. All lines written between /* and */ will be treated as a comment.

This way, you can make entire paragraphs of information and comment out sections of code in your JavaScript file without affecting the program’s functionality. You can use this approach to quickly test parts of your code by quickly commenting and uncommenting multiple lines of code. The JavaScript interpreter completely ignores comments during the code-execution process, so nothing within the comment tags affects the output of your code.

Keep in mind that clear and concise comments aid in maintaining clean code, saving both your time and others’ when returning to the code in the future.