They really are key codes and not character codes. For example, you can even detect the Shift key going down. And you can tell the difference between the numbers running across the top of the keyboard and the numeric keypad.
Here's a selection of some codes.
| Key | keyCode |
|---|---|
| Left arrow | 37 |
| Right arrow | 39 |
| Up arrow | 38 |
| Down arrow | 40 |
| Space bar | 32 |
| Escape | 27 |
| A - Z | 65-90 |
| 0 - 9 | 48-57 |
| Shift | 16 |
| Control | 17 |
| Alt | 18 |
| Enter | 32 |
| CapsLock | 20 |
| Backspace | 8 |
| Tab | 9 |
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