Is there a functionality in JavaScript to convert values into specific locale formats?

Question

Is there a built in function of JavaScript to convert a string into a particular locale (Euro in my case)?

E.g. 50.00 should get converted to 50,0

Answer 1

There are locale related features described within the ECMAScript Internationalization API.

To get the float 50.0 converted to the string 50,00 € (using the 'de-DE' locale) you need to write this:

new Intl.NumberFormat("de-DE", {style: "currency", currency: "EUR"}).format(50.0)

This API is available in all current major browsers.

For more info about the number formatting features of the Internationalization API you should read the article at MDN.