It’s pretty well supported now – even Internet Explorer 11 has partial support. But if you need it, there’s a polyfill here: https://formatjs.io/docs/polyfills/

It’s pretty well supported now – even Internet Explorer 11 has partial support. But if you need it, there’s a polyfill here: https://formatjs.io/docs/polyfills/intl-datetimeformat/ https://formatjs.io/docs/polyfills/intl-datetimeformat/