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倒计时练习

2016-06-30 20:43 375 查看

<!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=utf-8" />
<title>无标题文档</title>
<script src="../jquery-1.11.2.min.js"></script>
<style type="text/css">
*{ margin:0px auto; padding:0px}
#djs{ width:300px; height:100px}
#fen{ float:left; width:100px; height:100px; text-align:center; line-height:100px; vertical-align:middle; font-size:36px; font-weight:bold; font-family:"微软雅黑"; color:#9C9}
#miao{ float:left; width:100px; height:100px; text-align:center; line-height:100px; vertical-align:middle; font-size:36px; font-weight:bold; font-family:"微软雅黑"; color:#9C9}
#zz{ float:left; width:100px; height:100px; text-align:center; line-height:100px; vertical-align:middle; font-size:36px; font-weight:bold; font-family:"微软雅黑"; color:#9C9}
</style>
</head>

<body>
<?php
session_start();
//设置倒计时时间
$attr=array();
if(empty($_SESSION["djs"]))
{
$attr=array("fen"=>1,"miao"=>00);
$_SESSION["djs"]=$attr;
}
else
{
$attr=$_SESSION["djs"];
}
//开始倒计时 用JS控制
?>
<div id="djs">
<div id="fen"><?php echo $attr["fen"]; ?></div>
<div id="zz">:</div>
<div id="miao"><?php echo $attr["miao"]; ?></div>
</div>
</body>
<script type="text/javascript">
$(document).ready(function(e) {
window.setInterval("ShowTime()",1000);//间隔执行
});
function ShowTime()
{
$.ajax({
url:"djschuli.php",
dataType:"TEXT",
success: function(data){
if(data.trim()=="OVER")
{
$("#djs").text("倒计时结束");
}
else
{
var lie=data.trim().split("|");
$("#fen").text(lie[0]);
$("#miao").text(lie[1]);
}
}
});
}
</script>
</html>

<?php
session_start();
$attr=$_SESSION["djs"];
$fen=$attr["fen"];
$miao=$attr["miao"];
if($fen==0 && $miao==0)
{
echo"OVER";
exit();
}
if($miao==0)
{
$attr["miao"]=59;
$attr["fen"]=$attr["fen"]-1;
}
else
{
$attr["miao"]=$attr["miao"]-1;
}
$_SESSION["djs"]=$attr;
echo "{$attr['fen']}|{$attr['miao']}";

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