dateStyle and timeStyle option on Intl.DateTimeFormat API Specification [draft]

This proposal adds two options to Intl.DateTimeFormat: dateStyle and timeStyle. These options give a compact way to request the appropriate, locale-specific way to ask for a date and time of given lengths.

Status

Current Stage:

• Stage 4

Spec Text:

• https://tc39.github.io/proposal-intl-datetime-style/

Authors

• Zibi Braniecki (@zbraniecki)

Reviewers

• Frank Tang (@FrankYFTang)
• Nathan Hammond (@nathanhammond)

Informative

This proposal is based on the CLDR Date/Time Patterns:

• http://cldr.unicode.org/translation/date-time-patterns#TOC-Basic-Time-Formats
• http://cldr.unicode.org/translation/date-time-patterns#TOC-Basic-Date-Formats
• http://unicode.org/reports/tr35/tr35-dates.html

Usage

let o = new Intl.DateTimeFormat("en" , {
  timeStyle: "short"
});
console.log(o.format(Date.now())); // "13:31"

let o = new Intl.DateTimeFormat("en" , {
  dateStyle: "short"
});
console.log(o.format(Date.now())); // "21.03.2012"

let o = new Intl.DateTimeFormat("en" , {
  timeStyle: "medium",
  dateStyle: "short"
});
console.log(o.format(Date.now())); // "21.03.2012, 13:31"

Render Spec

npm install
npm run build
open index.html

Backpointers

• tc39/ecma402#108