3. Comments

In the rest of this module we will use comments to help explain the code so let’s look at how they work.

JavaScript supports two types of comments: single-line comments and multi-line comments. Comments allow you to add notes or explanations to your code that are ignored when the program runs.

Single-Line Comments

These comments start with // and anything after that point is treated as a comment.

// This is a single-line comment
let age = 16; // This comment explains the variable

Multi-Line Comments

These comments start with /* and end with */. They can span as many lines as you like.

/*
This is a multi-line comment.
It can explain a more complex piece of code.
*/

let person = "Alice";