Implementing basic functional idioms in JS---partial application, composition. Because I hate "bind." No, actually, just as a learning exercise, trying to get more familiar with JS quirks.

basicFuncStuff.js

function partial(func, arg){
	return function(){
		var args = arguments ? [].slice.call(arguments) : []
		args.unshift(arg);
		return func.apply(null, args);
	};
}

// comp applies functions right to left, like Clojure.
function comp(func1, func2){
	return function(){
		var args = arguments ? [].slice.call(arguments) : null
		return func1(func2.apply(null, args));
	};
}

// example of using partial application: 
function add(x, y){return x + y;}
var add5 = partial(add, 5);
console.log(add5(10)); // prints 15

// example of using composition:
function times3(x){return x * 3;}
var t3p5 = comp(add5, times3);
console.log(t3p5(1)); // prints 8
var p5t3 = comp(times3, add5);
console.log(p5t3(1)); // prints 18