实时

//获取服务器时间var curTimeUrl = "http://its.map.baidu.com:8002/traffic/GetCurrentTime? callback=BMapLib.TrafficControl.getTime&"; scriptRequest(curTimeUrl + (new Date()).getTime(),callback);//30 分钟刷新一次,先清除之前可能存在的timerif(me.timer) clearInterval(me.timer);me.timer = setInterval(function(){scriptRequest(curTimeUrl + (new Date()).getTime(),function(){var t = TrafficControl.curTime;//获取交通拥堵状况的描述（拥挤，缓行，畅通）trafficDescrible = t.getTrafficDescribe();var tHour = t.getHours();var time = (tHour < 10 ? ("0" + tHour) : tHour) + ":" + (t.getMinutes() < 10 ? ("0" + t.getMinutes()) : t.getMinutes());dvTcNow.innerHTML = time;me.hideTraffic(); me.showTraffic();});}, 1000 * 30 *60);//这里的30指的是每三十分钟刷新一次