bound

pass bound an interesting number followed by a lower bound and an upper bound. bound returns the first number unless its lower than the second number, in which case it returns the second number, or unless is higher than the third number, in which case it returns the third number.

(function () {

var a_number_from_one_to_10 = o.bound(11,1,10), // 10
another_number_from_one_to_10 = o.bound(-5,1,10); // 1

o.bound(2,3,5); // 3
o.bound(3,3,5); // 3
o.bound(4,3,5); // 4
o.bound(5,3,5); // 5
o.bound(6,3,5); // 5

})();