Intl.DurationFormat.prototype.format()
该 format()
方法 Intl.DurationFormat
实例根据此的区域设置和格式选项格式化持续时间 Intl.DurationFormat
对象。
语法
js
format(duration)
参数
duration
-
要格式化的持续时间对象。它应包含以下部分或全部属性:
months
、weeks
、days
、hours
、minutes
、seconds
、milliseconds
、microseconds
、nanoseconds
。
返回值
一个字符串,表示根据此的区域设置和格式选项格式化的给定duration
Intl.DurationFormat
对象。
注意:大多数情况下,format()
返回的格式是一致的。但是,即使在同一区域设置内,输出也可能因实现而异——输出差异是设计使然,并且规范允许。它也可能不是您期望的。例如,字符串可能使用不换行空格或被双向控制字符包围。您不应将format()
的结果与硬编码常量进行比较。
示例
使用 format()
以下示例演示如何使用英语创建持续时间格式化程序。
js
const duration = {
years: 1,
months: 2,
weeks: 3,
days: 3,
hours: 4,
minutes: 5,
seconds: 6,
milliseconds: 7,
microseconds: 8,
nanoseconds: 9,
};
// Without options, style defaults to "short"
new Intl.DurationFormat("en").format(duration);
// "1 yr, 2 mths, 3 wks, 3 days, 4 hr, 5 min, 6 sec, 7 ms, 8 μs, 9 ns"
// With style set to "long"
new Intl.DurationFormat("en", { style: "long" }).format(duration);
// "1 year, 2 months, 3 weeks, 3 days, 4 hours, 5 minutes, 6 seconds, 7 milliseconds, 8 microseconds, 9 nanoseconds"
// With style set to "narrow"
new Intl.DurationFormat("en", { style: "narrow" }).format(duration);
// "1y 2mo 3w 3d 4h 5m 6s 7ms 8μs 9ns"
使用不同区域设置和样式的 format()
js
const duration = {
hours: 1,
minutes: 46,
seconds: 40,
};
// With style set to "long" and locale "fr-FR"
new Intl.DurationFormat("fr-FR", { style: "long" }).format(duration);
// "1 heure, 46 minutes et 40 secondes"
// With style set to "short" and locale set to "en"
new Intl.DurationFormat("en", { style: "short" }).format(duration);
// "1 hr, 46 min and 40 sec"
// With style set to "short" and locale set to "pt"
new Intl.DurationFormat("pt", { style: "narrow" }).format(duration);
// "1h 46min 40s"
// With style set to "digital" and locale set to "en"
new Intl.DurationFormat("en", { style: "digital" }).format(duration);
// "1:46:40"
// With style set to "digital", locale set to "en", and hours set to "long"
new Intl.DurationFormat("en", { style: "digital", hours: "long" }).format(
duration,
);
// "1 hour, 46:40"
使用 fractionalDigits 选项的 format()
js
const duration = {
hours: 11,
minutes: 30,
seconds: 12,
milliseconds: 345,
microseconds: 600,
};
new Intl.DurationFormat("en", { style: "digital" }).format(duration);
// "11:30:12.3456"
new Intl.DurationFormat("en", { style: "digital", fractionalDigits: 5 }).format(
duration,
);
// "11:30:12.34560"
new Intl.DurationFormat("en", { style: "digital", fractionalDigits: 3 }).format(
duration,
);
// "11:30:12.346"
规范
规范 |
---|
Intl.DurationFormat # sec-Intl.DurationFormat.prototype.format |
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