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progrium/datetimeformat.js

Last active November 20, 2021 04:02
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Intl.DateTimeFormat is kinda nutty with custom format strings, this makes it sane
Raw
datetimeformat.js
function dateTimeFormat(timestamp, locale, str, ...opts) {
const d = new Date(timestamp);
return str.replace(/{(\d+)}/g, function(match, number) {
return typeof opts[number] != 'undefined'
? new Intl.DateTimeFormat(locale, opts[number]).format(d)
: match;
});
}
console.log(dateTimeFormat("2021-11-19T19:19:36.598071-06:00", "en", "{0} at {1}!", {dateStyle:"short"}, {timeStyle:"long"}))
// => "11/19/21 at 7:19:36 PM CST!"
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