Intl.NumberFormat() 的单位参数无效（伏特、焦耳...）

Question

我正在尝试本地化我的 Web 应用程序，但我无法使 Intl.NumberFormat 使用电气单位（安培、欧姆、伏特、焦耳...）。

在documentation, they provide some examples and the list of units available.

虽然我无法让它与电动装置一起工作:

// Working
console.log(new Intl.NumberFormat('fr', { style: 'unit', unit: 'second' }).format(1000));

// Failing with Invalid unit argument for Intl.NumberFormat() 'volt'
console.log(new Intl.NumberFormat('fr', { style: 'unit', unit: 'volt' }).format(1000));

有人知道为什么吗？

Answer 1

From MDN INTL

A subset of units from the full list was selected for use in ECMAScript.

Simple Unit
-----------
acre
bit
byte
celsius
centimeter
day
degree
fahrenheit
fluid-ounce
foot
gallon
gigabit
gigabyte
gram
hectare
hour
inch
kilobit
kilobyte
kilogram
kilometer
liter
megabit
megabyte
meter
mile
mile-scandinavian
milliliter
millimeter
millisecond
minute
month
ounce
percent
petabyte
pound
second
stone
terabit
terabyte
week
yard
year

Pairs of simple units can be concatenated with "-per-" to make a compound unit. There is no default value; if the style is "unit", the unit property must be provided.

很酷：兆字节每秒 变成法语 mégaoctets par seconde

console.log(
  new Intl.NumberFormat('fr', 
    { style: 'unit', unit: 'megabyte-per-second', 'unitDisplay': 'long' }
).format(1000)
);

Intl.NumberFormat() 的单位参数无效（伏特、焦耳...）

Invalid unit argument for Intl.NumberFormat() with electric units (volt, joule...)

javascript

localization