不重複按鈕
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=BIG5">
<title>第一支javaScript</title>
</head>
<body>
<Script type ="text/javascript">
var rx1=0,rx2=0,rx3=0,maxNum=0,minNum=0;
maxNum=9;
mixNum=0;
rx1=Math.floor( Math.random() * (maxNum - minNum + 1) ) + minNum;
rx2=Math.floor( Math.random() * (maxNum - minNum + 1) ) + minNum;
rx3=Math.floor( Math.random() * (maxNum - minNum + 1) ) + minNum;
while(rx1==rx2)
{
rx1=Math.floor( Math.random() * (maxNum - minNum + 1) ) + minNum;
}
while(rx2==rx3 || rx3==rx1 )
{
rx3=Math.floor( Math.random() * (maxNum - minNum + 1) ) + minNum;
}
document.write("我的亂數"+rx1,rx2,rx3);
</Script>
<input type="button" value="Random" onclick="javascript:window.location.reload()"/>
</body>
</html>
可重複無按鈕
<title>第一支javaScript</title>
</head>
<body>
<h2>document.write用法</h2>
<Script type ="text/javascript">
var rx1=0,rx2=0,rx3=0,maxNum=0,minNum=0;
maxNum=9;
mixNum=0;
rx1=Math.floor( Math.random() * (maxNum - minNum + 1) ) + minNum;
rx2=Math.floor( Math.random() * (maxNum - minNum + 1) ) + minNum;
rx3=Math.floor( Math.random() * (maxNum - minNum + 1) ) + minNum;
document.write("亂數"+rx1,rx2,rx3);
</Script>
</body>
</html>
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