为什么Intl.NumberFormat在es-ES语言环境中一起格式化4位数字?

问题描述

我正在尝试使用 Intl.NumberFormat 格式化数字.

I'm trying to format a number using the Intl.NumberFormat.

我已经检查了 MDN WebDocs 但我无法获得我认为应该返回的响应.

I have checked MDN WebDocs but I'm not able to get the response I guess it should return.

我正在使用西班牙语语言环境进行格式化，我想获得成千上万的点分隔符(使用 useGrouping 选项)，但是，我没有得到

I'm formatting with spanish locale, and I want to get the point separator between thousands (using useGrouping option), however, I'm not getting it

• 预期结果:1.124,50€
• 获得的结果:1124,50€

var sNumber = '1124.5'
var number = new Number(sNumber);

let  style = {
            style: 'currency',
            currency: "EUR",
            minimumFractionDigits: 2,
            useGrouping: true
        };

const formatter = new Intl.NumberFormat("es", style);

console.log(formatter.format(number));

推荐答案

这似乎是具有4位数字(即1234.56)的西班牙格式程序的功能.

This seems to be a feature of the Spanish formatter with 4-digit numerics (i.e. 1234.56).

看看下面的内容并运行它:

Take a look at the below and run it:

let  style = {
            style: 'currency',
            currency: "EUR",
            minimumFractionDigits: 2,
            useGrouping: true
        };
var formatter = new Intl.NumberFormat("es", style);

console.log('Spanish (ES)');
console.log(formatter.format(1234.56));
console.log(formatter.format(12345.67));
console.log(formatter.format(123456.78));

formatter = new Intl.NumberFormat("de-DE", style);

console.log('German (de-DE)');
console.log(formatter.format(1234.56));
console.log(formatter.format(12345.67));
console.log(formatter.format(123456.78));

您会看到，对于5位数及以上的数字，西班牙语格式化程序确实确实按预期对数字进行了分组.

You will see that for 5-digit and above numbers, the Spanish formatter does indeed group the numbers as expected.

但是，如果您使用德语格式化程序( de-DE )，它将正确格式化4位数字.

However, if you use a German formatter (de-DE), it correctly formats the 4-digit numeric.

输出:

Spanish (ES)
1234,56 €
12.345,67 €
123.456,78 €

German (de-DE)
1.234,56 €
12.345,67 €
123.456,78 €

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