Referência de JavaScript

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Esta parte da seção de JavaScript no MDN serve como um repositório de fatos sobre o idioma JavaScript. Leia mais  sobre esta referência.
 Objetos globais 
 Este capítulo documenta todos os  objetos embutidos padrão de JavaScript , juntamente com seus métodos e propriedades. 
  
 Declarações 
 Este capítulo documenta todas as  declarações e declarações de JavaScript . 
  
 Expressões e operadores 
 Este capítulo documenta todas as  expressões e operadores de JavaScript . 
  
 Funções 
 Este capítulo documenta como trabalhar com  funções de JavaScript  para desenvolver seus aplicativos. 

    argumentos   
 
  Funções de seta  
 
  Parâmetros padrão  
 
  Parâmetros de descanso  
 Páginas de referência adicionais 

   Gramática lexica  
 
  Tipos de dados e estruturas de dados  
 
  Modo estrito  
 
  Recursos desaprovados  

              
                
                
                  Document Tags and Contributors
  
    
    Tags: 
    
        JavaScript
        l10n:priority
    
  
                    
                       Contributors to this page: 
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                       Last updated by:
                      vanessadacosta,
                      Jul 29, 2017, 7:24:09 AM
                    
                
            
              
              
                  
  
    See also
 
  JavaScript
  Tutorials:
  Complete beginners
   
    JavaScript basics
    JavaScript first steps
    JavaScript building blocks
    Introducing JavaScript objects
   
  
  JavaScript Guide
    
      Introduction
      Grammar and types
      Control flow and error handling
      Loops and iteration
      Functions
      Expressions and operators
      Numbers and dates
      Text formatting
      Regular expressions
      Indexed collections
      Keyed collections
      Working with objects
      Details of the object model
      Iterators and generators
      Meta programming
   
  
  Intermediate
   
    A re-introduction to JavaScript
    JavaScript data structures
    Equality comparisons and sameness
    Closures
   
  
  Advanced
   
    Inheritance and the prototype chain
    Strict mode
    JavaScript typed arrays
    SIMD types
    Memory Management
    Concurrency model and Event Loop
   
  
  References:
  Built-in objects
   Array
ArrayBuffer
 AsyncFunction
Atomics
Boolean
DataView
Date
Error
EvalError
Float32Array
Float64Array
Function
Generator
GeneratorFunction
Infinity
Int16Array
Int32Array
Int8Array
InternalError
Intl
Intl.Collator
Intl.DateTimeFormat
Intl.NumberFormat
 Iterator
JSON
Map
Math
NaN
Number
Object
 ParallelArray
Promise
Proxy
RangeError
ReferenceError
Reflect
RegExp
 SIMD
 SIMD.Bool16x8
 SIMD.Bool32x4
 SIMD.Bool64x2
 SIMD.Bool8x16
 SIMD.Float32x4
 SIMD.Float64x2
 SIMD.Int16x8
 SIMD.Int32x4
 SIMD.Int8x16
 SIMD.Uint16x8
 SIMD.Uint32x4
 SIMD.Uint8x16
Set
SharedArrayBuffer
 StopIteration
String
Symbol
SyntaxError
TypeError
TypedArray
URIError
Uint16Array
Uint32Array
Uint8Array
Uint8ClampedArray
WeakMap
WeakSet
 WebAssembly
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
 escape()
eval()
isFinite()
isNaN()
null
parseFloat()
parseInt()
undefined
 unescape()
uneval()
  
  Expressions & operators
   Arithmetic operators
 Array comprehensions
Assignment operators
Bitwise operators
Comma operator
Comparison operators
Conditional (ternary) Operator
Destructuring assignment
Expression closures
 Generator comprehensions
Grouping operator
Legacy generator function expression
Logical Operators
Object initializer
Operator precedence
Property accessors
Spread syntax
 async function expression
 await
class expression
delete operator
function expression
function* expression
in operator
instanceof
new operator
new.target
super
this
typeof
void operator
yield
yield*
  
  Statements & declarations
   Legacy generator function
async function
block
break
class
const
continue
debugger
default
do...while
empty
export
for
  for each...in
for...in
for...of
function declaration
function*
if...else
import
label
let
return
switch
throw
try...catch
var
while
 with
  
  Functions
   Arguments object
Arrow functions
Default parameters
Method definitions
Rest parameters
getter
setter
  
  Classes
   constructor
extends
static
  
  Errors
   Error: Permission denied to access property "x"
InternalError: too much recursion
RangeError: argument is not a valid code point
RangeError: invalid array length
RangeError: invalid date
RangeError: precision is out of range
RangeError: radix must be an integer
RangeError: repeat count must be less than infinity
RangeError: repeat count must be non-negative
ReferenceError: "x" is not defined
ReferenceError: assignment to undeclared variable "x"
ReferenceError: can't access lexical declaration`X' before initialization
ReferenceError: deprecated caller or arguments usage
ReferenceError: invalid assignment left-hand side
ReferenceError: reference to undefined property "x"
SyntaxError: "0"-prefixed octal literals and octal escape seq. are deprecated
SyntaxError: "use strict" not allowed in function with non-simple parameters
SyntaxError: "x" is a reserved identifier
SyntaxError: JSON.parse: bad parsing
SyntaxError: Malformed formal parameter
SyntaxError: Unexpected token
SyntaxError: Using //@ to indicate sourceURL pragmas is deprecated. Use //# instead
SyntaxError: a declaration in the head of a for-of loop can't have an initializer
SyntaxError: applying the 'delete' operator to an unqualified name is deprecated
SyntaxError: for-in loop head declarations may not have initializers
SyntaxError: function statement requires a name
SyntaxError: identifier starts immediately after numeric literal
SyntaxError: illegal character
SyntaxError: invalid regular expression flag "x"
SyntaxError: missing ) after argument list
SyntaxError: missing ) after condition
SyntaxError: missing : after property id
SyntaxError: missing ; before statement
SyntaxError: missing = in const declaration
SyntaxError: missing ] after element list
SyntaxError: missing formal parameter
SyntaxError: missing name after . operator
SyntaxError: missing variable name
SyntaxError: missing } after function body
SyntaxError: missing } after property list
SyntaxError: redeclaration of formal parameter "x"
SyntaxError: return not in function
SyntaxError: test for equality (==) mistyped as assignment (=)?
SyntaxError: unterminated string literal
TypeError: "x" has no properties
TypeError: "x" is (not) "y"
TypeError: "x" is not a constructor
TypeError: "x" is not a function
TypeError: "x" is not a non-null object
TypeError: "x" is read-only
TypeError: More arguments needed
TypeError: can't access dead object
TypeError: can't define property "x": "obj" is not extensible
TypeError: can't delete non-configurable array element
TypeError: can't redefine non-configurable property "x"
TypeError: cyclic object value
TypeError: invalid 'in' operand "x"
TypeError: invalid Array.prototype.sort argument
TypeError: invalid arguments
TypeError: invalid assignment to const "x"
TypeError: property "x" is non-configurable and can't be deleted
TypeError: setting getter-only property "x"
TypeError: variable "x" redeclares argument
URIError: malformed URI sequence
Warning: -file- is being assigned a //# sourceMappingURL, but already has one
Warning: 08/09 is not a legal ECMA-262 octal constant
Warning: Date.prototype.toLocaleFormat is deprecated
Warning: JavaScript 1.6's for-each-in loops are deprecated
Warning: String.x is deprecated; use String.prototype.x instead
Warning: expression closures are deprecated
Warning: unreachable code after return statement
  
  Misc
   
    JavaScript technologies overview
    Lexical grammar
    JavaScript data structures
    Enumerability and ownership of properties
    Iteration protocols
    Strict mode
    Transitioning to strict mode
    Template literals
    Deprecated features
   
  
  New in JavaScript
   ECMAScript 2015 support in Mozilla
ECMAScript 5 support in Mozilla
ECMAScript Next support in Mozilla
Firefox JavaScript changelog
New in JavaScript 1.1
New in JavaScript 1.2
New in JavaScript 1.3
New in JavaScript 1.4
New in JavaScript 1.5
New in JavaScript 1.6
New in JavaScript 1.7
New in JavaScript 1.8
New in JavaScript 1.8.1
New in JavaScript 1.8.5
  
  Documentation:
  Useful lists
   
    All pages index
    Methods index
    Properties index
    Pages tagged "JavaScript"
   
  
  Contribute
   
    JavaScript doc status
    The MDN project
Referência de JavaScript

Páginas de referência adicionais Gramática lexica Tipos de dados e estruturas de dados Modo estrito Recursos desaprovados

Document Tags and Contributors

Páginas de referência adicionais

Gramática lexica
Tipos de dados e estruturas de dados
Modo estrito
Recursos desaprovados
