Guia de JavaScript

The JavaScript Guide shows you how to use JavaScript and gives an overview of the language. If you want to get started with JavaScript or programming in general, consult the articles in the learning area. If you need exhaustive information about a language feature, have a look at the JavaScript reference.

Capítulos

This Guide is divided into several chapters:

• Introdução

  About this guide
  About JavaScript
  JavaScript and Java
  ECMAScript
  Tools
  Hello World

• Gramática e tipos

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

• Controlo de fluxo e manipulação de erros

  if...else
switch
try/catch/throw
  Error objects
  Promises

• Loops e iteração

  for
while
do...while
break/continue
for..in
for..of

• Funções

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

• Expressões e operadores

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

• Números e datas Number literals

  Number object
  Math object
  Date object

• Formatação de texto

  String literals
  String object
  Template literals
  Internationalization
  Regular Expressions

• Coleções indexadas

  Arrays
  Typed arrays

• Coleções Keyed

  Map
WeakMap
Set
WeakSet

• Trabalhar com  objetos

  Objets e propriedades
  Criação de objetos
  Definição de métodos
  Getter and setter

• Detalhes do modelo de objeto

  Prototype-based OOP
  Creating object hierarchies
  Inheritance

• Iterators e geradores

  Iterators
  Iterables
  Generators

• Metadados de programação

  Proxy
  Handlers and traps
  Revocable Proxy
  Reflect