<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=BIG5">
<title>第一支javaScript</title>
</head>
<body>
<h2>document.write用法</h2>
<Script type ="text/javascript">
var rx,minNum, maxNum;
minNum=0;
maxNum=3;
rx=Math.floor( Math.random() * (maxNum - minNum + 1) ) + minNum;
document.write("亂數"+rx);
</Script>
</body>
</html>
亂數不重複
<html>
<head>
<title>HTML</title>
</head>
<body>
<script>
function add() {
var balls = new Array(10);
var i=0,j=0,k=0;
for(i=0;i<9;i++)
{
balls[i]=i+1;
}
for(i=1;i<=1000;i++)
{
j=Math.floor(Math.random()*9);
k=Math.floor(Math.random()*9);
balls[9]=balls[j];
balls[j]=balls[k];
balls[k]=balls[9];
}
document.write(balls[0]+","+balls[1]+","+balls[2]);
}
</script>
<input type="button" value="亂數" onclick="add()"/>
</body>
</html>
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