Intl.NumberFormat.prototype.formatToParts() is scheduled to be added to the ECMAScript Internationalization API specification (Ecma 402). It adds a method to format a number to a list of tokens and their types (e.g. minusSign, integer, decimal, fraction, currency, percentSign, etc). See also the corresponding DateTimeFormat feature here:



Editor's draft

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 64
  • Chrome for Android release 64
  • Android WebView release 64

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Search tags

javascript, ecmascript, intl, string, i18n, internationalization, format, js, es6, es7, esnext,

Last updated on 2020-11-09