var value = ease(t, easing);
t is time from 0.0 to 1.0
var value = ease(0.25, "inOutBounce");
See explanation
var value = ease(0.25, "0149");
If you don't like global scope pollution just skip to the end of file and replace this line with whatever suits you:
window.ease = ease;
If you are looking for one argument equations - well you found them.