compose functions

compose.js

/**
 *  add the result of a function as an argument for the next function, e.g f(g(c))
 *  @param {...Function} functions to be composed
 *  @return {Function} the composed function
 */ 
function compose() {
  var funcs = arguments;
  
  return function composed(value) {
    var i = funcs.length;
    while(i--) {
      value = funcs[i](value);
    }
    return value;
  }
}

/*
  usage example:
  function g(c) { return c + 'A'; }
  function f(x) { return x + 'B'; }
  compose(f, g)('Test: ');     // => f(g(c)) => 'Test: AB'
*/