Counting upper and lower case characters in a string

Question

First off, I know this is far from professional. I\'m trying to learn how to work with strings. What this app is supposed to do is take a simple text input and do a few thi

Answer 1

isUpperCase and isLowerCase are not JavaScript functions.

You can replace them with something like

var isUpperCase = function(letter) {
    return letter === letter.toUpperCase();
};

var isLowerCase = function(letter) {
    return letter === letter.toLowerCase();
};

There were a lot of syntax errors in your code which you need to check.

I was also getting confused with all your brackets so instead of using the charAt I just referenced the string like an array. So instead of text.charAt(letters) I used text[letters] which I found easier to read.

See the full jsFiddle here. I modified your code slightly because jsFiddle doesn't allow document.write