<!DOCTYPE?html>
<html>
<head>
<meta?charset="utf-8"?/>
<title>sy8-4</title>
<script?type="text/javascript">
????????function?select()
????????{
????????????var?s=Math.random();
????????????alert(s);
????????????var?c=1/11;
????????????if(s<c)
????????????????alert("0");
????????????else?if?(s<2*c)?{
????????????????alert("1");
????????????}else?if?(s<3*c)?{
????????????????alert("2");
????????????}else?if?(s<4*c)?{
????????????????alert("3");
????????????}else?if?(s<5*c)?{
????????????????alert("4");
????????????}else?if?(s<6*c)?{
????????????????alert("5");
????????????}else?if?(s<7*c)?{
????????????????alert("6");
????????????}else?if?(s<8*c)?{
????????????????alert("7");
????????????}else?if?(s<9*c)?{
????????????????alert("8");
????????????}else?if?(s<10*c)?{
????????????????alert("9");
????????????}else(s<11*c)?{
????????????????alert("10");
????????????}
????????}
????</script>
</head>
<body>
?????
????<input?type="button"?value="開始抽獎(jiǎng)"?onclick="select()">
</body>
</html>
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