A useful tool for formatting phone numbers with the correct prefix by given country code in Javascript (Vanilla)
Containing 252 world states prefixes!
Instalation Paste code inside your project folder, include it inside header or just in any class.
Use : let countryCode = "CZ"; let telephoneToFormat = "225321486"
let telephoneFormatted = TelephoneFormatter.normalize(telephoneToFormat, countryCode);
OUTPUT: +420 225 321 486
Important! If you want to change spacing between numbers, change it in makeSpaces() there is a number 3, for making spaces after 3 chars.
Any contribution is welcomed! :)