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说明: 21点（黑杰克）
效果: 运行后查看！
代码:
<html>
<head>
<title>21点（黑杰克）</title>
</head>
<body>
<script LANGUAGE="JavaScript">
<!-- Hide from non-JavaScript browsers
function random(maxValue)
{
day = new Date();
hour = day.getHours();
min = day.getMinutes();
sec = day.getSeconds();
return (((hour + 1) * (min + 1) * sec) % maxValue) + 1;
}
function pickSuit()
{
suit = random(4);
if(suit == 1)
return "红桃";
if(suit == 2)
return "草花";
if(suit == 3)
return "方块";
return "红心";
}
function cardName(card)
{
if(card == 1)
return "Ace";
if(card == 11)
return "侍从";
if(card == 12)
return "皇后";
if(card == 13)
return "国王";
return "" + card;
}
function cardValue(card)
{
if(card == 1)
return 11;
if(card > 10)
return 10;
return card;
}
function PickACard(strWho)
{
card = random(13);
suit = pickSuit();
//alert(strWho + " picked the " + cardName(card)
+ " of " + suit);
return cardValue(card);
}
function NewHand(form)
{
form.dealer.value = 0;
form.you.value = 0;
form.dealer.value = eval(form.dealer.value) + PickACard("Dealer");
form.you.value = eval(form.you.value) + PickACard("You");
}
function Dealer(form)
{
while(form.dealer.value < 17)
{
form.dealer.value = eval(form.dealer.value) + PickACard("Dealer");
}
}
function User(form)
{
form.you.value = eval(form.you.value) + PickACard("You");
if(form.you.value > 21)
{
alert("你破了!");
}
}
function LookAtHands(form)
{
if(form.dealer.value > 21)
{
alert("对手破了，你胜出!");
}
else if(form.you.value > form.dealer.value)
{
alert("你胜出了!");
}
else
if(form.dealer.value == form.you.value)
{
alert("平局!");
}
else
{
alert("对家胜了!");
}
}
//--></script>
<form>
<table BORDER="3">
<tr>
<td>对家有</td>
<td><input TYPE="TEXT" NAME="dealer"
size="20"></td>
</tr>
<tr>
<td>你有</td>
<td><input TYPE="TEXT" NAME="you"
size="20"></td>
</tr>
</table>
<div align="center"><center><p><input
TYPE="BUTTON" VALUE="要牌"
onClick="User(this.form)"> <input TYPE="BUTTON"
VALUE="亮牌"
onClick="Dealer(this.form);LookAtHands(this.form);">
<input TYPE="BUTTON"
VALUE="再来一手" onClick="NewHand(this.form)">
</p>
</center></div>
</form>
</body>
</html>
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