Learn JavaScript
  • Introduction
  • Basics
    • Comments
    • Variables
    • Types
    • Equality
  • Numbers
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    • Basic Operators
    • Advanced Operators
  • Strings
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    • Do...While
  • Functions
    • Higher Order Functions
  • Objects
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    • Reference
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    • Global footprint
  • Linked List
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  • Browser Object Model (BOM)
    • Window
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    • Navigator
    • Cookies
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  • Date and Time
  • JSON
  • Error Handling
    • try...catch...finally
  • Events
  • Regular Expression
  • Modules
  • Debugging
  • Classes
    • Static
    • Inheritance
    • Access Modifiers
  • Promise, async/await
    • Async/Await
  • Miscellaneous
    • Hoisting
    • Currying
    • Polyfills and Transpilers
  • Exercises
    • Console
    • Multiplication
    • User Input Variables
    • Constants
    • Concatenation
    • Functions
    • Conditional Statements
    • Objects
    • FizzBuzz Problem
    • Get the Titles!
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  1. Basics

Comments

Comments are statements that will not be executed by the interpreter, comments are used to mark annotations for other programmers or small descriptions of what code does, thus making it easier for others to understand what your code does.

In JavaScript, comments can be written in 2 different ways:

  • Line starting with //:

// This is a comment, it will be ignored by the interpreter
let a = "this is a variable defined in a statement";
  • Section of code starting with /*and ending with */, this method is used for multi-line comments:

/*
This is a multi-line comment,
it will be ignored by the interpreter
*/
let a = "this is a variable defined in a statement";
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Last updated 2 years ago

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