<script>var line =parseInt(prompt("input lines:"));var a =1,
b =1;for(var i =0; i < line /2; i++){
document.write(a +"</br>", b +"</br>");
a = a + b;
b = b + a;}</script>
2.递归
<script>functionfabio(line){if(line ==1|| line ==2)return1;elsereturnfabio(line -1)+fabio(line -2);}var line =parseInt(prompt("input lines:"));for(var i =1; i <= line; i++){if(i < line)
document.write(fabio(i)+'</br>');else
document.write(fabio(i));}</script>