setInterval(function(){

          var letftime=res.data.time-(Math.round(new Date().getTime()/1000).toString())

          if(letftime<=1){

          that.setData({

            h:'00',m:'00',s:'00'

            })

            return;

          }

          var hour=Math.floor(letftime/3600)

          var minute=Math.floor((letftime-hour*3600)/60)

          var second=Math.floor(letftime-hour*3600-minute*60)

          if(minute>=0&&second>=0){

            that.setData({

              m:minute<10?'0'+minute:minute,

              s:second<10?'0'+second:second,

              h:hour<10?'0'+hour:hour

            })

          }

        })