如何在JavaScript中使用CPF格式的数字？

Question

I would like to format an integer to the CPF (Cadastro de Pessoas Físicas)(Brazilian ID Number) format. I would like a function that takes an integer of 11 digits as an argument and returns a string formatted like this:

###.###.###-##

Example:

formatToCPF(integer){     // integer=94256116885

    String formattedString

    //code

return formattedString    //returns "942.561.168-85"

Answer 1

You can first get the String value of integer and then format it with slice().

s = integer.toString()
formattedString = s.slice(0,3)+"."+
    s.slice(3,6)+"."+
    s.slice(6,9)+"-"+
    s.slice(9,11)