var a=1; var b=1; document.write(b+"<br/>"); var c; document.write(c+"<br/>"); var n=3; while (n<=20){ c=a+b; document.write(c+"<br/>"); a=b; b=c; n++ }
斐波那契数列
原文:http://www.cnblogs.com/Lv2017/p/6666663.html