google maps - JQuery - refresh a marker position (to get movement) -

i have gps based system sends mysql database coordinates.

using code:

(function() {     window.onload = function() {          // creating new map         var map = new google.maps.map(document.getelementbyid("map"), {           center: new google.maps.latlng(41.65, -0.88),           zoom: 1,           maptypeid: google.maps.maptypeid.roadmap         });          function createpoints(json){         var infowindow = new google.maps.infowindow();          // looping through json data         (var = 0, length = json.locations.length; < length; i++) {                  var data = json.locations[i],                 latlng = new google.maps.latlng(data.lat, data.long);              var iconbase = 'https://maps.google.com/mapfiles/kml/shapes/';             var marker = new google.maps.marker({                 position: latlng,                 map: map,                 title: data.nome,                 icon: iconbase + 'schools_maps.png'                 });               (function(marker, data) {                  // attaching click event current marker                 google.maps.event.addlistener(marker, "click", function(e) {                     infowindow.setcontent(data.nome);                     infowindow.open(map, marker);                 });               })(marker, data);                          /* movemarker( map, marker ); */           }          }           //  json data php script  var json ;  $.getjson("http://mywebservice/nmea_last.php").done(function(data) {    json = data;     createpoints(json); });      }  })(); 

uding getjson("http://mywebservice/nmea_last.php") sentence, last coordinates gps sends (pediodically) mysql, , marker appears correctly. question is, how dinamically refresh of marker catch movement on map?

i think need use settimeout method (or not?) not know how. help? in advance.

i suggest looking @ setinterval function, can use call function on regular intervals. information can found here.

i believe want wrap getjson call within setinterval function pull new points , refresh map. example fire getjson call every 5 seconds:

setinterval(function() {   $.getjson("http://mywebservice/nmea_last.php").done(function(data) {      json = data;      createpoints(json);   }); }, 5000);