Intl.RelativeTimeFormat

Available in Chrome from version 71 Chrome

Available in Edge from version 79 Edge

Available in Firefox from version 65 Firefox

Available in Opera from version 58 Opera

Available in Safari from version 14 Safari

Available in Chrome Android from version 71 Chrome Android

Available in Firefox for Android from version 65 Firefox for Android

Available in Opera Android from version 50 Opera Android

Available in Safari on iOS from version 14 Safari on iOS

Available in Samsung Internet from version 10.0 Samsung Internet

Available in WebView Android from version 71 WebView Android

Available in WebView on iOS from version 14 WebView on iOS

Available in Deno from version 1.8 Deno

Available in Node.js from version 12.0.0 Node.js

Output

{
	value: "year",
	style: "long",
	numeric: "auto"
}
// 2 年後

{
	value: "years",
	style: "long",
	numeric: "auto"
}
// 2 年後

{
	value: "quarter",
	style: "long",
	numeric: "auto"
}
// 2 四半期後

{
	value: "quarters",
	style: "long",
	numeric: "auto"
}
// 2 四半期後

{
	value: "month",
	style: "long",
	numeric: "auto"
}
// 2 か月後

{
	value: "months",
	style: "long",
	numeric: "auto"
}
// 2 か月後

{
	value: "week",
	style: "long",
	numeric: "auto"
}
// 2 週間後

{
	value: "weeks",
	style: "long",
	numeric: "auto"
}
// 2 週間後

{
	value: "day",
	style: "long",
	numeric: "auto"
}
// 明後日

{
	value: "days",
	style: "long",
	numeric: "auto"
}
// 明後日

{
	value: "hour",
	style: "long",
	numeric: "auto"
}
// 2 時間後

{
	value: "hours",
	style: "long",
	numeric: "auto"
}
// 2 時間後

{
	value: "minute",
	style: "long",
	numeric: "auto"
}
// 2 分後

{
	value: "minutes",
	style: "long",
	numeric: "auto"
}
// 2 分後

{
	value: "second",
	style: "long",
	numeric: "auto"
}
// 2 秒後

{
	value: "seconds",
	style: "long",
	numeric: "auto"
}
// 2 秒後