Published May 6, 2021Updated Oct 14, 2023
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Comments are pieces of text within a JavaScript program that is not interpreted or executed. They provide additional information to aid in understanding the code.

Single-line Comments

Single-line comments are created with two consecutive forward slashes //:

// Prints 5 to the console

A single-line comment can also be used inline to comment after a line of code:

console.log(5); // Prints 5

Multi-line Comments

Multi-line comments are created by surrounding the lines with /* at the beginning and */ at the end. Comments are good for a variety of reasons like explaining a code block or indicating some hints, etc.

The configuration below must be
changed before deployment.
let baseUrl = 'localhost/taxwebapp/country';

This syntax can also be used to comment something out in the middle of a line of code:

console.log(/* IGNORED! */ 5); // Still prints 5

Codebyte Example

The code in the following that is not commented out will execute when the program is run:

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