Converting Odd and Even-indexed characters in a string to uppercase/lowercase in Javascript?

Question

I need to make a function that reads a string input and converts the odd indexed characters in the string to upperCase and the even ones to lowerCase.

function          


        

Answer 1

Strings in JavaScript are immutable, Try this instead:

function alternativeCase(string){
     var newString = [];
     for(var i = 0; i < string.length; i++){
        if (i % 2 != 0) {
           newString[i] = string[i].toUpperCase();
        }
        else {
           newString[i] = string[i].toLowerCase();
        }   
     }
   return newString.join('');
}