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

• Basic syntax & comments
• Declarations
• Variable scope
• Variable hoisting
• Data structures and types
• Literals

Control flow and error handling

Loops and iteration

Functions

• Defining functions
• Calling functions
• Function scope
• Closures
• Arguments & parameters
• Arrow functions

Expressions and operators

• Assignment & Comparisons
• Arithmetic operators
• Bitwise & logical operators
• Conditional (ternary) operator