This is a small program written in javascript that returns the location of a note or notes on a guitar string or across all the strings.
For example, if you want to find which fret the 'A' note is on the 'E' string, you'd use the function:
findFret('e', 'a');
If you wanted to find where the 'A' note is on all the strings in standard tuning, you'd use:
findFrets('a');
And if you want to find the location of all the notes in the G Major Pentatonic scale (G A B D E) across all the strings in standard tuning, you'd use:
findFretsInScale(['g', 'a', 'b', 'd', 'e']);
If you want, you can specifiy a different tuning in findFrets(note, tuning) and findFretsInScale(scale, tuning) where tuning is an array of the string notes. Otherwise, the tuning variable is set to ['e', 'a', 'd', 'g', 'b', 'e'] by default (standard tuning E A D G B E).