Do you know the Intl
object in Javascript?
This namespace stands for the ECMAScript's internationalization API, and provides some nice features such as string comparison, and number, date and time formatting. With this post I'll show about currency formatting using the NumberFormat
constructor.
Recently I had to format integers to a currency format and I had 2 options:
- Do it myself (which I'm a huge fan of)
- Use some external library
But this time was different, and I took some time to search about the topic and then I found Intl.NumberFormat
. It's usage is simple, here's an example:
const reaisFormatter = new Intl.NumberFormat('pt-BR', {
style: 'currency',
currency: 'BRL'
})
reaisFormatter.format(123.50) // R$ 123,50
And that was it. Simple, huh? And within the NumberFormat
constructor you have an infinity of possibilities, such as unit formatting (liters, centimeters, foot...), percentage, decimal formatting and so on.
Perheps you don't need to npm install
something to do that anymore. Hope you enjoyed it!
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