<script type="text/javascript"> var a = 5767, b = 4453; var nmbGYS = GYS(a, b); alert(a + ":" + b + " <=> " + (a / nmbGYS) + ":" + (b / nmbGYS)); /* 求最大公约数 */ function GYS(max, min) { if(!min) return max; return GYS(min, max % min); } </script> [您可以先修改代码再运行]