效果截图

代码如下：

抽签系统啊

.container{background-color:#ffff99;

margin-top:10px;margin-left:300px;margin-right:300px;width:auto;height:auto;}

var num = 0;

var arr = new Array();

var vis = new Array();

var mark = new Array();

var c = 0;

var k = 0;

var t;

var tt;

//for(var i = 0; i < 19; i++)

//vis[i] = i+1;

var cont = 0;

while(1)

{

var tt = parseInt(Math.random()*19+1);

if(!mark[tt])

{

mark[tt] = 1;

vis[cont++] = tt;

}

if(cont == 19)

break;

}

function timedCount()

{

document.getElementById('txt').value = c;

k = k+1;

k = k%(vis.length);

c = vis[k];

t = setTimeout("timedCount()",100)

}

function stopCount()

{

clearTimeout(t);

tt = document.getElementById('txt').value

}

function Random()

{

//tt = parseInt(Math.random()*19+1);

var draw = document.getElementById("display");

num++;

arr.push(tt);

draw.innerHTML = draw.innerHTML + "

第"+num+"组抽中："+tt+"

";

var tmp = new Array();

tmp.length = 0;

var cnt = 0;

for(var i = 0; i < vis.length; i++)

{

if(vis[i] != tt)

{

tmp[cnt] = vis[i];

cnt = cnt+1;

}

}

vis.length = 0;

for(var i = 0; i < tmp.length; i++)

{

vis[i] = tmp[i];

}

document.getElementById("count").innerHTML = arr.length;

if(arr.length == 19){

alert("已经抽完!");

}

}

function Clear(){

arr = null;

arr = new Array();

mark = new Array();

var cont = 0;

while(1)

{

var tt = parseInt(Math.random()*19+1);

if(!mark[tt])

{

mark[tt] = 1;

vis[cont++] = tt;

}

if(cont == 19)

break;

}

//for(var i = 0; i < 19; i++)

//vis[i] = i+1;

k = 0;

num = 0;

c = 0;

clearTimeout(t);

document.getElementById('txt').value= "0";

document.getElementById("count").innerHTML = "0";

document.getElementById("display").innerHTML = "";

}