t-5.倒计时--本地--服务器（未完）

　　　　

// 倒计时（从客户端获取时间）   

      var mysetInterval=setInterval(function countTime(){

            //获取当前时间  

            var date = new Date();  

            var now = date.getTime();  

            //设置截止时间  

            var endDate = new Date("2018-5-14 18:36:00");  

            var end = endDate.getTime();  

            //时间差  

            var leftTime = end-now; 

            if(leftTime<=0){

                d=0;

                h=0;

                m=0;

                s=0;

                clearInterval(mysetInterval);

            }else{

                //定义变量 d,h,m,s保存倒计时的时间  

                var d,h,m,s;  

                if (leftTime>=0) {  

                    d = Math.floor(leftTime/1000/60/60/24);  

                    h = Math.floor(leftTime/1000/60/60%24);  

                    m = Math.floor(leftTime/1000/60%60);  

                    s = Math.floor(leftTime/1000%60);                     

                }

                    function checkTime(i){

                       if(i<10){

                          i="0"+i;

                       }

                          return i;

                    }

                    //将倒计时赋值到div中  

                    document.getElementById("d").innerHTML =checkTime(d);  

                    document.getElementById("h").innerHTML =checkTime(h);  

                    document.getElementById("m").innerHTML =checkTime(m);  

                    document.getElementById("s").innerHTML =checkTime(s);  

                }

                //递归每秒调用countTime方法，显示动态时间效果  

                // setTimeout(countTime,1000); 

                console.log("1"); //测试看程序是否会停止；       

            }

      ,1000);