I'm using this code to get gps data from (db.php from database), I need to update marker without refreshing the page. I tested setInterval (function ()), it works but it updates the whole page (map + marker). I need to update just the position of marker (variable uluru) but my problem is that the variable uluru is local
<html>
<head>
<style>
#map {
height: 400px;
width: 100%;
}
</style>
</head>
<body>
<div id="map"><b></b></div>
<div id="map2"><b>
</b></div>
<script>
var markers = [];
function loadmap(){
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function () {
if (this.readyState == 4 && this.status == 200) {
myObj = JSON.parse(this.responseText);
var latt = myObj.name;
var longg = myObj.name2;
uluru = {lat:+latt , lng:+longg };
map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center:uluru,
});
addmarker(uluru);
}
};
xmlhttp.open("GET","db.php?q=",true);
xmlhttp.send();
}
function addmarker(location){
var marker = new google.maps.Marker({ position: location, map: map });
markers.push(marker);
}
setInterval(function(){ loadmap() }, 1000);
</script>
<script
async defer
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyD9J11XCcYDoT8-s0BD9sR4ARzIUmpI&callback=loadmap">
</script>
</body>
</html></div>
