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所以，我试图每五秒更新一次标记/用户的位置，以便用户实时更新他们的位置。我可以让当前位置和坐标以正确的间隔更新，但我希望谷歌地图上的标记更新，我不明白在谷歌地图代码中的哪里放置我的坐标以便实时更新？

    var x=document.getElementById("demo");

    function startGeolocation() {
      var options;
      navigator.geolocation.getCurrentPosition(geoSuccess, options);
      setTimeout(startGeolocation, 1000);
    }

    function geoSuccess(position) {
      var gpsPosition = position;
      var coordinates = gpsPosition.coords;
      myLat = coordinates.latitude;
      myLong = coordinates.longitude;
      //x.innerHTML="Latitude: " + myLat + 
      //"<br>Longitude: " + myLong;
      }

     var map;

     function initialize() {
     var mapOptions = {
     zoom: 18,
     mapTypeId: google.maps.MapTypeId.ROADMAP
     };
     map = new google.maps.Map(document.getElementById('map-canvas'),
     mapOptions);

   // Try HTML5 geolocation
   if(navigator.geolocation) {
   navigator.geolocation.getCurrentPosition(function(position, options) {
   //trying to pass in myLat and myLong from the live update above
   var pos = new google.maps.LatLng(position.coords.myLat,
                                   position.coords.myLong);

  var infowindow = new google.maps.InfoWindow({
    map: map,
    position: pos,
    content: 'You are here'
  });

  map.setCenter(pos);
  }, function() {
  handleNoGeolocation(true);
 });
 } else {
// Browser doesn't support Geolocation
 handleNoGeolocation(false);
 }
 }

 function handleNoGeolocation(errorFlag) {
 if (errorFlag) {
 var content = 'Error: The Geolocation service failed.';
 } else {
 var content = 'Error: Your browser doesn\'t support geolocation.';
 }

 var options = {
 map: map,
 position: new google.maps.LatLng(60, 105),
 content: content
 };

  var infowindow = new google.maps.InfoWindow(options);
  map.setCenter(options.position);
 }

 google.maps.event.addDomListener(window, 'load', initialize);
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1 回答 1

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您使用了错误的功能。您应该使用setInterval();

setTimeout（表达式，超时）；超时后运行代码/函数一次。

setInterval（表达式，超时）；以间隔运行代码/函数，它们之间的超时长度。

https://stackoverflow.com/a/2696711/2332336

于 2013-10-16T14:03:20.820 回答