javascript部份函数的实现

一、实现斐波纳契数列

function fibonacci(size) {  var first = 0, second = 1, next, count = 2, result = [first, second];  if(size < 2)    return "the request was made but it was not good"  while(count++ < size) {    next = first + second;    first = second;    second = next;    result.push(next);  }  return result;}

二、实现factorial(n)阶乘

function factorial(n) {

  return n < 2 ? 1: factorial(n-1)*n;

}

来源：http://www.csdn.net/article/2013-07-11/2816190-If-Hemingway-wrote-JavaScript