用于Geolocation的JSON嵌套数组

Question

我正在尝试使用JSON Feed并使用该信息在Google地图上绘制穿梭巴士。我似乎无法弄清楚如何删除标题。或许我甚至不必这样做，而且我错过了一些东西。 JSON提要如下所示：

{"header":{"gtfs_realtime_version":"1","incrementality":0,"timestamp":1473346401},"entity":[{"id":"1","is_deleted":false,"trip_update":null,"vehicle":{"trip":{"trip_id":"2351087","start_time":"10:30:00","start_date":"20160908","schedule_relationship":0,"route_id":"30"},"position":{"latitude":41.7992477,"longitude":-71.44529,"bearing":360.0,"odometer":0.0,"speed":0.0},"current_stop_sequence":0,"current_status":2,"timestamp":1473346346,"congestion_level":0,"stop_id":"12815","vehicle":{"id":"1604","label":"1604","license_plate":" "}},"alert":null},{"id":"2","is_deleted":false,"trip_update":null,

上面还有大约20个航天飞机。

以下是我对该功能的看法。我得到了＃34; Uncaught TypeError：无法读取属性＆＃39;标题＆＃39;未定义＆＃34;。虽然可能会有更多错误，但我无法弄清楚如何摆脱标题。我不是一个程序员，我一直在学习。非常感谢任何帮助。

placeVehicles1();
setInterval(placeVehicles1, 15000);

function placeVehicles1() {

$.getJSON('JSON URL', function(datah){  
$.each(datah, function(key){

var hillArray =[key] ;

hillArray[0] =datah['entity']['vehicle'][key]['190'];
hillArray[1] =datah['entity']['vehicle'][key]['191'];
hillArray[2] =datah['entity']['vehicle'][key]['192'];

    var number = hillArray[key]; 
    for(h=0; h<101; h++){
    {
            var Latitudeh = datah['position'][key]['latitude'];
            var Longitudeh = datah['position'][key]['logitude'];
            var Timeh = datah['entity'][key].timestamp;
            var Routeh = datah[key].Route_id;
            var Vehicleh = datah[key].Vehicle;
            //markersArray.length=0;
            markersArray.push(datah);

            //Set Lat and Long of each Bus

            var imageh = 'GoldBus.png';
            var myLatlngh = new google.maps.LatLng(parseFloat(datah['position'][key]['latitude']),parseFloat(datah['position'][key]['logitude']));
if (h=101){
marker=null;
}else{}
            var marker = new google.maps.Marker({
                position: myLatlngh,
                title: 'Shuttle',
                map: map,
                icon: imageh
            });

        google.maps.event.addListener(marker, 'click', function() {
              infowindow.open(map,marker);
            });
        //}}
        // Define Content to Show in popup
            var mycontenth = "<div class='infowin'>Time:<h3>" + Timeh + "</h3>" + "Route:<h3>" + Routeh + "</h3>" + "Vehicle:<h3>" + Vehicleh + "</h3></div>";
            var infowindowh = new google.maps.InfoWindow({
                content: mycontenth         
});