第一种求法：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script>
var num = [0，1];
function figure(){
if(num.length < N){
var newNum = num[num.length - 1] + num[num.length - 2];
num.push(newNum);
figure();
}else{
return false;
}
}
figure();
console.log(num)
</script>
</body>
</html>
第二种求法：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script>
var num1 = 1;
var num2 = 1;
for(var i = 3; i < N; i++){
var temp = num2;
num2 = num1 + num2;
num1 = temp;
}
console.log(num2);
</script>
</body>
</html>
原文：http://www.cnblogs.com/yuyuhang/p/6370914.html