<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML
1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html
xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type"
content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<body>
<table id="tb">
<tr>
<td>1</td><td>2</td><td>3</td><td>4</td><td>5</td>
</tr>
<tr>
<td>16</td><td></td><td></td><td></td><td>6</td>
</tr>
<tr>
<td>15</td><td></td><td></td><td></td><td>7</td>
</tr>
<tr>
<td>14</td><td></td><td></td><td></td><td>8</td>
</tr>
<tr>
<td>13</td><td>12</td><td>11</td><td>10</td><td>9</td>
</tr>
</table>
<p></p>
请输入1-16其中一位整数，代表要停止的位置<input id="txtnum"
value="12" type="text" /><input
type="button" value="开始" onclick="StartGame()"
/>
<script
type="text/javascript">
function Trim(str){
return
str.replace(/(^\s*)|(\s*$)/g, "");
}
function GetSide(m,n){
//初始化数组
var arr =
[];
for(var
i=0;i<m;i++){
arr.push([]);
for(var
j=0;j<n;j++){
arr[i][j]=i*n+j;
}
}
//获取数组最外圈
var
resultArr=[];
var
tempX=0,
tempY=0,
direction="Along",
count=0;
while(tempX>=0 &&
tempX<n &&
tempY>=0 &&
tempY<m &&
count<m*n)
{
count++;
resultArr.push([tempY,tempX]);
if(direction=="Along"){
if(tempX==n-1)
tempY++;
else
tempX++;
if(tempX==n-1&&tempY==m-1)
direction="Inverse"
}
else{
if(tempX==0)
tempY--;
else
tempX--;
if(tempX==0&&tempY==0)
break;
}
}
return
resultArr;
}
var index=0,
//当前亮区位置
prevIndex=0,
//前一位置
Speed=300,
//初始速度
Time,
//定义对象
arr = GetSide(5,5),
//初始化数组
EndIndex=0,
//决定在哪一格变慢
tb =
document.getElementByIdx_x("tb"),
//获取tb对象
cycle=0,
//转动圈数
EndCycle=0,
//计算圈数
flag=false,
//结束转动标志
quick=0;
//加速
function StartGame(){
cycle=0;
flag=false;
EndIndex=Math.floor(Math.random()*16);
//EndCycle=Math.floor(Math.random()*4);
EndCycle=1;
Time =
setInterval(Star,Speed);
}
function Star(num){
//跑马灯变速
if(flag==false){
//走五格开始加速
if(quick==5){
clearInterval(Time);
Speed=50;
Time=setInterval(Star,Speed);
}
//跑N圈减速
if(cycle==EndCycle+1
&& index==EndIndex){
clearInterval(Time);
Speed=300;
flag=true;
//触发结束
Time=setInterval(Star,Speed);
}
}
if(index>=arr.length){
index=0;
cycle++;
}
//结束转动并选中号码
if(flag==true
&&
index==parseInt(Trim(document.getElementByIdx_x("txtnum").value))-1){
quick=0;
clearInterval(Time);
}
tb.rows[arr[index][0]].cells[arr[index][1]].style.border="3px solid
red";
if(index>0)
prevIndex=index-1;
else{
prevIndex=arr.length-1;
}
tb.rows[arr[prevIndex][0]].cells[arr[prevIndex][1]].style.border="3px
solid #ccc";
index++;
quick++;
}
</script>
</body>
</html>