Funcionalidades obsoletas

Esta página lista as funcionalidades de JavaScript que estão obsoletas (ou seja, ainda disponíveis, mas planeadas para remoção) e obsoletas (isto é, não são mais utilizáveis).

Funcionalidades obsoletas

Estas funcionalidades obsoletas ainda podem ser utilziadas, mas devem ser utilizadas ​​com cuidado, pois espera-se que estas sejam removidas inteiramente no futuro. Deverá trabalhar para remover a utilização das mesmas do seu código..

Propriedades de RegExp

The following properties are deprecated. This does not affect their use in replacement strings:

The following are now properties of RegExp instances, no longer of the RegExp object:

Métodos de egExp

• The compile() method is deprecated.
• The valueOf method is no longer specialized for RegExp. Use Object.valueOf().

Propriedades de Function

• The caller and arguments properties are deprecated, because they leak the function caller. Instead of the arguments property, you should use the arguments object inside function closures.

Gerador de Legacy

• Legacy generator function statement and Legacy generator function expression are deprecated. Use function* statement and function* expression instead.
• JS1.7/JS1.8 Array comprehension and JS1.7/JS1.8 Generator comprehension are deprecated.

Iterator

• StopIteration is deprecated.
• Iterator is deprecated.

Métodos de Object

• watch and unwatch are deprecated. Use Proxy instead.
• __iterator__ is deprecated.
• __noSuchMethod__ is deprecated. Use Proxy instead.

Métodos de Date

• getYear and setYear are affected by the Year-2000-Problem and have been subsumed by getFullYear and setFullYear.
• You should use toISOString instead of the deprecated toGMTString method in new code.
• toLocaleFormat is deprecated.

Functions

• Expression closures are deprecated. Use regular functions or arrow functions instead.

Proxy

• Proxy.create and Proxy.createFunction are deprecated. Use Proxy instead.
• The following traps are obsolete:
  • hasOwn (bug 980565, Firefox 33).
  • getEnumerablePropertyKeys (bug 783829, Firefox 37)
  • getOwnPropertyNames (bug 1007334, Firefox 33)
  • keys (bug 1007334, Firefox 33)

Sequências de Escape

• Octal escape sequences (\ followed by one, two, or three octal digits) are deprecated in string and regular expression literals.
• The escape and unescape functions are deprecated. Use encodeURI, encodeURIComponent, decodeURI or decodeURIComponent to encode and decode escape sequences for special characters.

Métodos de String

• HTML wrapper methods like String.prototype.fontsize and String.prototype.big.
• String.prototype.quote is removed from Firefox 37.
• non standard flags parameter in String.prototype.search, String.prototype.match, and String.prototype.replace are deprecated.

Funcionalidades removidas

Estas funcionalidades obsoletas foram totalmente removidas do JavaScript e não podem mais ser utilizadas a partir da versão indicada do JavaScript.

Object

Function

Array

Number

• Number.toInteger()

ParallelArray

• ParallelArray

Statements

• for each...in is deprecated. Use for...of instead.
• Destructuring for...in is deprecated. Use for...of instead.
• let blocks and let expressions are obsolete.

E4X

See E4X for more information.

Variáveis Sharp

Consulte Sharp variables in JavaScript para mais informação.