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javascripttypescriptreact-nativelocale

React-native set number to string by locale

I have a number, if I use the amount.toFixed() I get this string "100.00". I want the result to be consistent with the locale.

if locale is Italian the result is 100,00 , if locale is English the result is 100.00

what can I use?

amount.toFixed(2)

I use react-native

Solution

  • You should use directly the javascript built-in method Intl​.Number​Format. There are many useful properties.

    To format your number, you can use the properties maximumSignificantDigits, minimumSignificantDigits, maximumFractionDigits, minimumFractionDigits and minimumIntegerDigits.

    Here is a working fiddle: 

    var number = "123456.78"; // string 

console.log(new Intl.NumberFormat('de-DE', { style: 'decimal'}).format(number));

console.log(new Intl.NumberFormat('en-US', { style: 'decimal', maximumSignificantDigits:7 }).format(number));