一个输赢游戏

下面为效果显示区!

这是一个与电脑玩剪刀、包子、锤的游戏

脚本说明:
第一步:把如下代码加入<head>区域中
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function playGame(choice) {
with (document.game) {
comp = Math.round((Math.random() * 2) + 1); 
var choicename;
if (comp == 1) choicename = "rock";
if (comp == 2) choicename = "paper";
if (comp == 3) choicename = "scissors";
msg.value = 'The computer chose ' + choicename + ';  ';

switch(choice) { // calculates score
case 1 : // rock
         if (comp == 1) {  draw.value++; msg.value += 'It is a draw.'; break; }
         if (comp == 2) {  loss.value++;  msg.value += 'You lost!';     break; }
         if (comp == 3) {  win.value++; msg.value += 'You won!';      break; }
case 2 : // paper
         if (comp == 1) {  win.value++;  msg.value += 'You won!';      break; }
         if (comp == 2) {  draw.value++; msg.value += 'It is a draw.'; break; }
         if (comp == 3) {  loss.value++; msg.value += 'You lost!';     break; }
case 3 : // scissors
         if (comp == 1) {  loss.value++;  msg.value += 'You lost!';     break; }
         if (comp == 2) {  win.value++; msg.value += 'You won!';      break; }
         if (comp == 3) {  draw.value++; msg.value += 'It is a draw.'; break; }
      }
      msg.value += '  Go again!';
   }
}
//  End -->
</script>

第二步:把如下代码加入<body>区域中
<form name=game>
<table border=1 cellpadding=5>
<tr>
<td align=center>User:</td>
<td align=center><a href="javascript:void(0);" onClick="playGame(1);"><img src="rock.gif" width=29 height=23 border=0></a></td>
<td align=center><a href="javascript:void(0);" onClick="playGame(2);"><img src="paper.gif" width=29 height=23 border=0></a></td>
<td align=center><a href="javascript:void(0);" onClick="playGame(3);"><img src="scissors.gif" width=29 height=23 border=0></a></td>
</tr>
<tr>
<td colspan=4 align=center><input type=text name=msg size=45></td>
</tr>
<tr>
<td colspan=4 align=center>
<input type=text name=win readonly value="0" size="2"> Wins  
<input type=text name=loss readonly value="0" size="2"> Losses   
<input type=text name=draw readonly value="0" size="2"> Draws
</td>
</tr>
</table>
</form>