The Intl namespace object contains several constructors as well as functionality common to the internationalization constructors and other language sensitive functions. Collectively, they comprise the ECMAScript Internationalization API, which provides language sensitive string comparison, number formatting, date and time formatting, and more.| developer.mozilla.org
We are an open community of developers, technical writers, and learners building resources for a better Web, regardless of brand, browser, or platform. Anyone can contribute, and each person who does contribute has an impact on millions of readers. Learn how to contribute and drive innovation on the Open Web.| developer.mozilla.org
Introduction This specification's source can be found at https://github.com/tc39/ecma402. The ECMAScript 2025 Internationalization API Specification (ECMA-402 12th Edition), provides key language sensitive functionality as a complement to the ECMAScript 2025 Language Specificatio| tc39.es
