Intl.DurationFormat.prototype.format()

可用性有限

此功能不是基线,因为它在一些使用最广泛的浏览器中无法正常工作。

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:monthsweeksdayshoursminutessecondsmillisecondsmicrosecondsnanoseconds

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

浏览器兼容性

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另请参阅