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POOpen infoWindow of specific marker from outside Google Maps (V3)
 

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    <p>I can't seem to get my head around this problem:</p> <p>I've got a map with (a lot of) markers (companies) that come from a generated XML file. Below the map, I want to show a (non-JavaScript-generated) list of all the companies that are displayed on the map. When I would click a company in the list, the map would pan to that specific marker and open an infoWindow. The thing is that I want the map and the list to be two separate things... </p> <p>What would be the right way to tackle this problem? Thanks! Important is that all markerinfo is dynamic... </p> <pre><code>function initialize_member_map(lang) { var map = new google.maps.Map(document.getElementById("large-map-canvas"), { center: new google.maps.LatLng(50.85034, 4.35171), zoom: 13, mapTypeId: 'roadmap' }); var infoWindow = new google.maps.InfoWindow; downloadUrl("/ajax/member-xml-output.php", function(data) { var xml = data.responseXML; var markers = xml.documentElement.getElementsByTagName("marker"); var bounds = new google.maps.LatLngBounds(); for (var i = 0; i &lt; markers.length; i++) { var company = markers[i].getAttribute("company"); var address = markers[i].getAttribute("address"); var type = markers[i].getAttribute("type"); var uid = markers[i].getAttribute("uid"); // Primary key of company table in MySQL var point = new google.maps.LatLng( parseFloat(markers[i].getAttribute("lat")), parseFloat(markers[i].getAttribute("lng"))); var html = "&lt;b&gt;" + company + "&lt;/b&gt; &lt;br/&gt;" + address; bounds.extend(point); var marker = new google.maps.Marker({ map: map, position: point, uid: uid // Some experiments, wanted to use this to target specific markers... }); bindInfoWindow(marker, map, infoWindow, html); } map.setCenter(bounds.getCenter()); map.fitBounds(bounds); }); } function bindInfoWindow(marker, map, infoWindow, html) { google.maps.event.addListener(marker, 'click', function() { infoWindow.setContent(html); infoWindow.open(map, marker); }); } 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() {} </code></pre> <p>Following the suggestions by Michal, I've tried the following, but am encountering two problems: my console tells me <code>markers[index].getPosition is not a function</code> and the first item in my list shows to be <code>undefined</code>. Can you please help?</p> <pre><code>//JavaScript Document var map; var markers = new Array(); var company_list; function initialize_member_map(lang) { map = new google.maps.Map(document.getElementById("large-map-canvas"), { center: new google.maps.LatLng(50.85034, 4.35171), zoom: 13, mapTypeId: 'roadmap' }); var infoWindow = new google.maps.InfoWindow; // Change this depending on the name of your PHP file downloadUrl("/ajax/member-xml-output.php?country=BE", function(data) { var xml = data.responseXML; markers = xml.documentElement.getElementsByTagName("marker"); var bounds = new google.maps.LatLngBounds(); for (var i = 0; i &lt; markers.length; i++) { var company = markers[i].getAttribute("company"); var address = markers[i].getAttribute("address"); var type = markers[i].getAttribute("type"); var uid = markers[i].getAttribute("uid"); var point = new google.maps.LatLng( parseFloat(markers[i].getAttribute("lat")), parseFloat(markers[i].getAttribute("lng"))); var html = "&lt;b&gt;" + company + "&lt;/b&gt; &lt;br/&gt;" + address; bounds.extend(point); var marker = new google.maps.Marker({ map: map, position: point, uid: uid }); bindInfoWindow(marker, map, infoWindow, html); company_list += "&lt;div onclick=scrollToMarker(" + i + ")&gt;"+company+"&lt;/div&gt;"; } map.setCenter(bounds.getCenter()); map.fitBounds(bounds); //display company data in html document.getElementById("company_list").innerHTML = company_list; }); } function scrollToMarker(index) { map.panTo(markers[index].getPosition()); } function bindInfoWindow(marker, map, infoWindow, html) { google.maps.event.addListener(marker, 'click', function() { infoWindow.setContent(html); infoWindow.open(map, marker); }); } 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(){ } </code></pre>
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