• 倒计时练习


    <!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{ 300px; height:100px}
    #fen{ float:left; 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; 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; 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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  • 原文地址:https://www.cnblogs.com/hamilton/p/5631192.html
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