谷歌地图使用AJAX添加标记

所以我已经读过很多关于闭包问题的文章，我假设这就是它，但我不确定如何解决它。

问题：基本上，我只得到 1 个标记，我假设这是因为我使用相同的"标记"变量？但我不确定，也没有看到一个简单的解决方案来修复它。我确信有一些显而易见的事情，我希望得到真正了解Javascript的人的帮助，而不是我只是搞砸它，直到我得到我需要的结果。

谢谢！

<script>
var geocoder;
var map;
var markersArray = [];
var plocation = [];
function initialize() {
geocoder = new google.maps.Geocoder();
var latlng = new google.maps.LatLng(39.50, -98.35);
var myOptions = {
    zoom: 4,
    center: latlng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
}
function codeAddress() {
    //Delete Existing Markers
    clearOverlays();
    deleteOverlays();
    //Geocode and Add the New One + Results.
    var address = document.getElementById("address").value;
    geocoder.geocode( { 'address': address}, function(results, status) {
    if (status == google.maps.GeocoderStatus.OK) {
        map.setCenter(results[0].geometry.location);
        //add the center marker
        var patientslocation =results[0].geometry.location;
        addMarker(patientslocation, "Patient");
        //Zoom in on the Region.
        map.setZoom(10);
        //Call to Our API
        $.getJSON("map/search", { provider_type: "01", loc: '"'+patientslocation+'"' },function(data) {
            //Parse Results
            var htmlstring = "";
            var arraylength = data.length-1;
            console.log("Result Count (base 0): "+arraylength)
            $(data).each(function(i,val){
                //Build HTML String for Side Bar
                if (val.name){
                    htmlstring = htmlstring + "<h3>"+val.name+"</h3>";
                }
                if (val.address){
                    htmlstring = htmlstring + val.address +"<br/>";
                }
                if (val.phone){
                    htmlstring = htmlstring +val.phone +"<br/>";
                }
                //Build HTML Strings for Each Marker Hover
                //Load the Array of Markers
                plocation[i] = new google.maps.LatLng(val.lat, val.lng);
                console.log(i +" : " +plocation[i]);
                if(i === arraylength){
                    console.log("Load plocations called")
                    load_plocations();
                }
            });
            $('#prov_list').html(htmlstring);
        });
} else {
    alert("Geocode was not successful for the following reason: " + status);
}
});
}
function load_plocations(){
    $(plocation).each(function(k,v){
        console.log("Calling AddMarker: "+v)
        addMarker(v,k);
    });
}
function addMarker(location, name) {
   console.log("Adding Marker: "+location)
    marker = new google.maps.Marker({
        position: location,
        map: map
    });
    markersArray.push(marker);
}
//Clears the Markers from the map.
function clearOverlays() {
    console.log("Clearing Overlays");
    if (markersArray) {
        for (i in markersArray) {
            markersArray[i].setMap(null);
        }
    }
}
// Deletes all markers in the array by removing references to them
function deleteOverlays() {
    console.log("Deleting Overlays");
    if (markersArray) {
        for (i in markersArray) {
            markersArray[i].setMap(null);
        }
        markersArray.length = 0;
    }
}