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POJavascript callbacks
 

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    <p>I use ajax to get a list of locations then to mark google map based on the array created from the ajax result. How do I make the callback function to have ajax call, array constructed, mark google map all synchronized.(updateMapMarkers() isn't called) Here is my code. Thanks</p> <pre><code>// main function to do work // need timer calling getLocations() function loadMapList() { // initial google map here var count = 40; $("#countdown").html(count + " seconds remaining!"); getLocations(); count--; timeout = setInterval(function(){ $("#countdown").html(count + " seconds remaining!"); if (count == 0) { count =40; getLocations(); } count--; }, 1000); } // using ajax to get location info function getLocations(){ var url = "getLocations"; $.ajax({ type: 'GET', url: url, dataType: 'json', async: false, success: function(data){ if (data.locationList == null || data == 'undefined') { return; } allLocArray.length = 0; for (i in data.locationList) { allLocArray[i] = new Array(3); allLocArray[i][0] = data.locationList[i].LOCATE_NAME; allLocArray[i][1] = data.locationList[i].LATITUDE; allLocArray[i][2] = data.locationList[i].LONGITUDE; } }, error: function(xhr, textStatus, error){ alert(xhr.statusText); alert(textStatus); alert(error); } }); } // mark google map using global var array function updateMapMarkers() { var myOptions = { zoom: zoomLevel, center: new google.maps.LatLng(centerLat, centerLong), mapTypeId: google.maps.MapTypeId.ROADMAP } var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions); for (var i=0; i&lt;allLocArray.length; i++) { var myLatLng = new google.maps.LatLng(allLocArray[i][1], allLocArray[i][2]); var marker = new google.maps.Marker({ position: myLatLng, map: map, title:allLocArray[i][0] }); } } </code></pre>
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    1. COWhere you are calling `updateMapMarkers()`?
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