According to caniuse, promises are supported by Chrome since v33, by Edge since v12, by Firefox since v29, and by Safari since 7.1.
https://caniuse.com/promises
Both Chrome 33 and Firefox 29 were released in 2014.
According to caniuse, promises are supported by Chrome since v33, by Edge since v12, by Firefox since v29, and by Safari since 7.1.
https://caniuse.com/promises
Both Chrome 33 and Firefox 29 were released in 2014.