有没有办法在ECMAscript Internationalization API中获取小数和千位分隔符？ [英] Is there a way to get the decimal and thousands separator in ECMAscript Internationalization API?

问题描述

我正在尝试使用新的 Javascript国际化API ，以及想知道是否有办法获得 Intl.NumberFormat 实例的小数和千位（分组）分隔符？

I'm trying to use the new Javascript internationalization API, and would like to know if there is a way to get the decimal and thousands (grouping) separator for a Intl.NumberFormat instance?

resolvedOptions对象的 方法，但不提供符号。

There is a resolvedOptions method on the object, but that does not provide the symbols.

如果有人想知道，那么对于en-US，这些是逗号，和句点。，例如 1,000.00 。

In case anybody's wondering, then for en-US, these would be a comma , and period ., such as in 1,000.00.

推荐答案

如果没有别的，作为一种技巧解决方案（不传递土耳其测试;见评论），您可以使用 的toLocaleString（） 确定有关区域设置中的数字格式的信息。对于当前的语言环境，例如：

If nothing else, as a trick solution (that doesn't pass the Turkey Test; see comment), you can use the output of toLocaleString() to determine information about number formatting in a locale. For the current locale, for example:

var decimalSeparator = 
    (12345.6789).toLocaleString().match(/345(.*)67/)[1];
var thousandSeparator = 
    (12345.6789).toLocaleString().match(/12(.*)345/)[1];
var numberOfDecimals = 
    (12345.6789).toLocaleString().match(/345(\D*)(\d+)$/)[2].length;

同样的技巧可用于货币格式化，例如使用（12345.6789）.toLocaleString（en-GB，{style：currency}）。

The same trick can be used for currency formatting, using e.g. (12345.6789).toLocaleString("en-GB", { style: "currency" }).

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