倒计时
<!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>倒计时</title> <script type="text/javascript" src="jquery-1.11.2.min.js"></script> <style type="text/css"> .djs{width: 250px;height: 100px;top: 120px;left: 180px;position: absolute;} #fen{float: left;font-family: 黑体; color: #92ff98;font-size: 40px;left: 180px;position: relative;} #miao{float: left;font-family: 黑体; color: #ff9de0;font-size: 40px;left: 200px;position: relative;} </style> </head> <body> <?php session_start(); //设置倒计时时间 $attr=array(); if(empty($_SESSION["djs"])) { $attr=array("fen"=>15,"miao"=>00); $_SESSION["djs"]=$attr; } else { $attr=$_SESSION["djs"]; } //开始倒计时 //用js控制 ?> <div class="djs"> <div id="fen"><?php echo $attr["fen"]; ?></div> <div id="miao"><?php echo $attr["miao"]; ?></div> </div> </body> <script type="text/javascript"> $(document).ready(function(e) { window.setInterval("showtime()",30); }); function showtime() { $.ajax({ url:"0714djschuli.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 and $miao==0) { echo "over"; exit(); } if($miao==0) { $attr["miao"]=59; $attr["fen"]=$attr["fen"]-1; } else { $attr["miao"]=$attr["miao"]-1; } $_SESSION["djs"]=$attr; echo "{$attr['fen']}|{$attr['miao']}";