<html><head><title>study 018</title></head><body><p>隨機數<br>
<script language="JavaScript" type="text/javascript">
total = 0;for (i = 0; i < 5000; i++)
{
num = Math.random(); total += num; if (i % 1000 == 0) document.write("正在處理第" + i + "個隨機數...<br>");
}average = total / 5000;average = Math.round(average * 1000) / 1000;
document.write("<h2>這5000個隨機數的平均值是：" + average + "</h2>");</script></p></body></html>