?? [?r?nd?m] US [?r?nd?m]

adj.Random; ???

n.???? ??


?????? ???() ??? ???

??: 0~1 ??? ??? ??? ?????.

??: ??Math.random()

??: 0.0 ~ 1.0 ??? ?? ??.

?????? ???() ??? ?

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<script type="text/javascript">
//取得介于 0 到 1 之間的一個隨機數(shù)
    document.write(Math.random())

</script>

</body>
</html>

???? ?? ?

??? ????? ??? "???? ??" ??? ?????