The collation
accessor property of Intl.Locale
instances returns the collation type for this locale, which is used to order strings according to the locale's rules.
The collation
accessor property of Intl.Locale
instances returns the collation type for this locale, which is used to order strings according to the locale's rules.
Collation is the process of ordering strings of characters. It is used whenever strings must be sorted and placed into a certain order, from search query results to ordering records in a database. While the idea of placing strings in order might seem trivial, the idea of order can vary from region to region and language to language. The collation
property's value is set at construction time, either through the co
key of the locale identifier or through the collation
option of the Intl.Locale()
constructor. The latter takes priority if they are both present; and if neither is present, the property has value undefined
.
For a list of supported collation types, see Intl.Locale.prototype.getCollations()
.
The set accessor of collation
is undefined
. You cannot change this property directly.
Like other locale subtags, the collation type can be added to the Intl.Locale
object via the locale string, or a configuration object argument to the constructor.
In the Unicode locale string spec, collation types are locale key "extension subtags". These subtags add additional data about the locale, and are added to locale identifiers by using the -u
extension. Thus, the collation type can be added to the initial locale identifier string that is passed into the Intl.Locale()
constructor. To add the collation type, first add the -u
extension to the string. Next, add the -co
extension to indicate that you are adding a collation type. Finally, add the collation type to the string.
const locale = new Intl.Locale("zh-Hant-u-co-zhuyin"); console.log(locale.collation); // "zhuyin"
The Intl.Locale()
constructor has an optional configuration object argument, which can contain any of several extension types, including collation types. Set the collation
property of the configuration object to your desired collation type, and then pass it into the constructor.
const locale = new Intl.Locale("zh-Hant", { collation: "zhuyin" }); console.log(locale.collation); // "zhuyin"
Specification |
---|
ECMAScript Internationalization API Specification # sec-Intl.Locale.prototype.collation |
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | Deno | Node.js | ||
collation |
74 | 79 | 75 | 62 | 14 | 74 | 79 | 53 | 14 | 11.0 | 74 | 1.8 | 12.0.0 |
© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/collation