Increment ASCII value of each character in a string

incrementString.js

var incrementString = function(string, count){
    var newString = [];
    for(var i = 0; i < string.length; i++){
        newString[i] = String.fromCharCode(string[i].charCodeAt() + count);
    }
    newString = newString.join('');
    console.log(newString);
    
    return newString;
}