A simplest, but powerful one-line calculator in JavaScript.

Usage:
- Type the formula in the window, then the result will appear scrolling up into the window.
- [pg up], [pg dn], [home] and [end] keys, to display the history of calculation.
- [pg dn] on the recent result, to display a new blank field.
- [shift] + [option] + [delete], to clear the history.
- You can use JavaScript and additional Math functions.
- You can also use variables (ex. X=1000; Y=10; X*Y)
- You can convert various uni…ts by "convert(n, from_unit, to_unit2)" , including current foreign exchange rates retrieved from the web. More