动态跳转代码

<div class="ui-ko"> 
    <p>系统检测您还没有绑定微信</p>
    <div><span id="send" class="f_red">3</span>正在跳页面...请立即绑定微信！</div> 
</div>
<meta http-equiv="refresh" content="3;URL=/mobile/member/weixin.php"/> 

<script type="text/javascript"> 
    var i = 3; 
    var interval=window.setInterval( 
        function() { 
            if(i == 0) { 
                clearInterval(interval); 
            } else { 
                $('#send').html(i);
                i--; 
            }
        },
        1000); 
</script>