JavaScript Guide - JavaScript | MDN

archived 17 Aug 2025 04:34:02 UTC
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JavaScript Guide

The JavaScript Guide shows you how to use JavaScript and gives an overview of the language. If you need exhaustive information about a language feature, have a look at the JavaScript reference.
This Guide is divided into the following chapters.

#Introduction

#Grammar and types

#Control flow and error handling

#Loops and iteration

#Functions

#Expressions and operators

#Numbers and strings

#Representing dates & times

#Regular expressions

#Indexed collections

#Keyed collections

#Working with objects

#Using classes

#Promises

#Typed arrays

Overview: Typed arrays

#Iterators and generators

#Internationalization

#JavaScript modules

#Advanced topics

After you have learned all fundamental features of JavaScript, you can explore some more niche features, or dive deeper into the language's mechanisms and concepts.
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