jquery实现的网页计数器

浏览数：53 / 时间：2015年06月09日

需求背景：门户网站特别是商务型网站实时统计加入某项活动的人数：

前端效果设计：根据访问的实时人数将数字实时反映到列表上,用的元素是 cite em ,用jquery效果控制数字画面实时翻转的效果。

代码：

<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus?">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>Document</title>
<script type="text/javascript" src="jquery-2.1.1.js">
</script>
<style>
ul{
position: absolute;
z-index: 1000;
height: 30px;

overflow: hidden;
list-style-type: none;
}
ul li{

float:right;
margin: 0 10px;
}
.item{
border: solid thin #808080;
text-align: center;
display: block;

width: 18px;
height: 28px;
}
.item em{

font-family: "Times New Roman",Georgia,Serif;
;
font-size: 18pt;
font-weight: bold;
color: #ff0000;
background-color: #ffffff;
}
</style>
<script type="text/javascript">
var total,total_arr1;
function init() {
total = 100000000;
total_arr1 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (var k = 0; k < 9; k++) {
for (var j = 1; j < 10; j++) {

$("em[t=" + j + "]:eq(" + k + ")").fadeOut();
}
}
}
function flush() {

var one = total % 10; //个位
var two = Math.floor(total % 100 / 10); //十位
var thr = Math.floor(total % 1000 / 100); //百位
var fou = Math.floor(total % 10000 / 1000); //千位
var fiv = Math.floor(total % 100000 / 10000); //万位
var six = Math.floor(total % 1000000 / 100000); //十万位
var sev = Math.floor(total % 10000000 / 1000000); //
var eig = Math.floor(total % 100000000 / 10000000);
var nig = Math.floor(total % 1000000000 / 100000000);
var arr = [one, two, thr, fou, fiv, six, sev, eig, nig]; //用一数组将这九个数字表示的九个位存起来,从左至右依次个位。。。

for (var i = 0; i < 9; i++) {

switch (arr[i]) {
case 1:
while(total_arr1[i]!=1){ //用arr1保存的当前位的数字，当与新的数字不同时，从当前数字开始依次递增翻转数字，直到匹配时停止遍历
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
}

break;
case 2:
while(total_arr1[i]!=2){
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
}
break;
case 3:
while(total_arr1[i]!=3){
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
}
break;
case 4:
while(total_arr1[i]!=4){
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
} //将当次的数字编号保存进数组arr1[i]中
break;
case 5:
while(total_arr1[i]!=5){
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
}
break;
case 6:
while(total_arr1[i]!=6){
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
}
break;
case 7:
while(total_arr1[i]!=7){
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
}
break;
case 8:
while(total_arr1[i]!=8){
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
}
break;
case 9:
while(total_arr1[i]!=9){
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
}
break;
case 0:
while(total_arr1[i]!=0){
$("em[t="+total_arr1[i]+"]:eq("+i+")").fadeOut();
total_arr1[i]=(total_arr1[i]+1)%10;
$("em[t="+total_arr1[i]+"]:eq("+i+")").slideToggle();
}
break;
default :
break;
}
}
}

function add(){
total++;
if(total==999999999){
total=0;
}
}

$(document).ready(function(){
init();
window.setInterval(‘add()‘,100);
var result=window.setInterval(‘flush()‘,2000);
});
</script>
</head>
<body>

<ul>
<li class="item">
<cite>
1 2 3 4
5 6 7 890
</cite>
</li>
<li class="item">
<cite>
1 2 3 4
5 6 7 890
</cite>
</li>
<li class="item">
<cite>
1 2 3 4
5 6 7 890
</cite>
</li>
<li> ,</li>
<li class="item">
<cite>
1 2 3 4
5 6 7 890
</cite>
</li>
<li class="item">
<cite>
1 2 3 4
5 6 7 890
</cite>
</li>
<li class="item">
<cite>
1 2 3 4
5 6 7 890
</cite>
</li>
<li> , </li>
<li class="item">
<cite>
1 2 3 4
5 6 7 890
</cite>
</li>
<li class="item">
<cite>
1 2 3 4
5 6 7 890
</cite>
</li>
<li class="item">
<cite>
1 2 3 4
5 6 7 890
</cite>
</li>
</ul>

</body>
</html>