I would like to alert each individual letter of a string, but I am unsure how to do this.

So, if I have:

var str = 'This is my string';

I would like to be able to separately alert T, h, i, s, etc. This is just the beginning of an idea that I am working on, but I need to know how to process each letter separately.

I want to use jQuery and was thinking I might need to use the split function after testing what the length of the string is.

Ideas?