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The [@@toPrimitive]() method converts a Date object to a primitive value.

Syntax

Date()[Symbol.toPrimitive](hint);

Return value

The primitive value of the given Date object. Depending on the argument, the method can return either a string or a number.

Description

The [@@toPrimitive]() method of the Date object returns a primitive value, that is either of type number or of type string.

If hint is "string" or "default", [@@toPrimitive]() tries to call the toString method. If the toString property does not exist, it tries to call the valueOf method and if the valueOf does not exist either, [@@toPrimitive]() throws a TypeError.

If hint is "number", [@@toPrimitive]() first tries to call valueOf, and if that fails, it calls toString.

JavaScript calls the [@@toPrimitive]() method to convert an object to a primitive value. You rarely need to invoke the [@@toPrimitive]() method yourself; JavaScript automatically invokes it when encountering an object where a primitive value is expected.

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Date.prototype.@@toPrimitive' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Date.prototype.@@toPrimitive' in that specification.
Draft  

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
Basic supportChrome ? Edge ? Firefox Full support 44IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile ? Firefox Android Full support 44Opera Android ? Safari iOS ? Samsung Internet Android ? nodejs Full support 6.0.0

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also

문서 태그 및 공헌자

이 페이지의 공헌자: SphinxKnight, wuqiu, Delapouite, fscholz, eduardoboucas, arai
최종 변경자: SphinxKnight,