What is up arrow/key/button, whatever, called in javascript?

i am wanna program the PlatformerController script from the 2d turorial to jump with the "up key", but when i try up arrow or up key or up button none seem to work! please help! ALL help is GREATLY appreciated! Thanks!

If you're using GetKey[Up/Down], you can just use GetKey(KeyCode.UpArrow)

If you want to use the string version (honestly I wouldn't though), you just use "up"

Here's the list of keycodes in case you need them:

http://unity3d.com/support/documentation/ScriptReference/KeyCode.html