I am working on a project that reads a database and adds marks on a map (these marks are variables that change every 20 seconds). The problem is that it only shows me the last brand I make, and not all.
I know I have to do new google.maps.Marker() for each of them, but I do not know how to do it because I'm very new working with HTML + JavaScript. How could I do it?
These are two links to a web page where you can see the problem: link 1 and link 2 ; and this is the code that I have so far:
//<![CDATA[
var customIcons = {
'2': { icon: 'http://labs.google.com/ridefinder/images/mm_20_blue.png' },
'1': { icon: 'http://labs.google.com/ridefinder/images/mm_20_green.png' },
'0': { icon: 'http://labs.google.com/ridefinder/images/mm_20_red.png' },
'3': { icon: 'http://labs.google.com/ridefinder/images/mm_20_yellow.png' }
};
function initMap() {
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(7.109176, -73.114219),
zoom: 14,
mapTypeId: 'roadmap'
});
var geocoder = new google.maps.Geocoder();
var infoWindow = new google.maps.InfoWindow;
var lati = null;
var lgd = null;
var marker = new google.maps.Marker({
map: map,
draggable:true
});
var markr = new google.maps.Marker({
map: map,
});
function Actualiza (){
// Change this depending on the name of your PHP file
downloadUrl("Consulta.php", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var name = markers[i].getAttribute("name");
var address = markers[i].getAttribute("address");
var cedul = markers[i].getAttribute("cedul");
var type = markers[i].getAttribute("type");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
var html = "<b>" + name + "</b> <br/>" + address + "</b> <br/>" + cedul;
var icon = customIcons[type] || {};
markr.setPosition(point);
markr.setIcon(icon.icon);
console.log(point);
bindInfoWindow( markr, map, infoWindow, html);
}
});
}
document.getElementById('submit').addEventListener('click', function() {
geocodeAddress(geocoder, map);
});
setInterval(Actualiza, 10000);
document.getElementById('enviar').addEventListener('click', function() {
var cedu = $('#ce').val();
var comen= $('#co').val();
var loo = $('#long').val();
var laa = $('#lat').val();
var settings = {
"async": true,
"crossDomain": true,
"url": "comentario.php",
"method": "POST",
"headers": {
"content-type": "application/json",
"cache-control": "no-cache",
"postman-token": "d2df5b1a-1820-68be-fa45-34ac55d9697b"
},
"processData": false,
"data": "{\"username\":\""+cedu+"\",\"comentario\":\""+comen+"\",\"servicio\":\"1\",\"lat\":\""+laa+"\",\"lon\":\""+loo+"\"}"
}
$.ajax(settings).done(function (response) {
console.log(response);
console.log(settings)
});
});
function geocodeAddress(geocoder, resultsMap) {
var address = document.getElementById('address').value;
geocoder.geocode({'address': address}, function(results, status) {
if (status === google.maps.GeocoderStatus.OK) {
resultsMap.setCenter(results[0].geometry.location);
marker.setPosition(results[0].geometry.location);
updatePosition(results[0].geometry.location);
} else {
alert('No podemos encontrar la dirección' + status);
}
console.log(results[0].geometry.location)
google.maps.event.addListener(marker, 'dragend', function(){
updatePosition(marker.getPosition());
});
});
}
}
function bindInfoWindow(markr, map, infoWindow, html) {
google.maps.event.addListener(markr, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, markr);
});
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ? new ActiveXObject('Microsoft.XMLHTTP') : new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function doNothing() {}
//]]><div id="floating-panel">
<input id="address" type="textbox" value="Bucaramanga">
<input id="submit" type="button" value="Buscar">
</div>
<div id="map"></div>
<div id="floatin">
<input type="text" name="lat" id="lat" placeholder="Latitud">
<input type="text" name="lng" id="long" placeholder="Longitud">
<input type="textbox" name="placa" id="ce" placeholder="Cedula">
<input type="textbox" name="comentarios" id="co" placeholder="Comentarios">
<input id="enviar" type="button" value="Enviar">
</div>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyA_1sJiE-QWC_mvdIqJB2eFvIPt6w&signed_in=true&callback=initMap" async defer></script>