每条评论更新：

Question

这是带有capdragon更新的新代码，但现在它不会创建标记。我现在不知道如何解决这个问题。我认为代码片段是一种非常聪明的方法来修复我之前识别标记的问题，这可能是我现在所缺少的一个非常小的东西。再次提供任何帮助将不胜感激。

<title>Open Street Map</title>
        <style type="text/css">
        html, body, #demo {
        position: absolute;
        left: 2%;
        width = 25%
        }
        html, body, #activePlanes {
        position: absolute;
        left: 2%;
        width = 25%
        }
        html, body, #mapBox {
        position: fixed;
        top: 0;
        right: 0;
        width: 75%;
        height: 100%;
        }
        </style>

        <script src="http://www.openlayers.org/api/OpenLayers.js"></script>
        <script type="text/javascript">

        var arrMarkers = [];
        function AddPlaneMarker(planeID, lonlat)
        {
            var markers = new OpenLayers.Layer.Markers("Markers");
            map.addLayer(markers);
            var marker = new OpenLayers.Marker(lonlat);
            marker.PlaneID = planeID;
            markers.addMarker(marker);
            arrMarkers.push(marker);
        }

        function RemovePlaneMarker(planeID)
        {
            for(var x in arrMarkers)
            {
                if(arrMarkers[x].PlaneID == planeID)
                {
                    arrMarkers.splice(x, 1);
                    markers.removeMarker(arrMarkers[x]); 
                    return;
                }       
            }
        }  

        function GetPlaneMarker(planeID)
        {
            for(var x in arrMarkers)
            {
                if(arrMarkers[x].PlaneID == planeID)
                {
                    return arrMarkers[x];
                }       
            }
        }

        function displayPlane()
        {
            var x = document.getElementById('planeList');
            var newPlane = document.createElement('option');
            newPlane.text = document.getElementById("plane_ID").value;
            if (newPlane.text == null || newPlane.text == "")
            {
                alert("Please specify an Aircraft ID");
            }
            else
            {
                try
                {
                    x.add(newPlane, x.newPlane[null]); // standards compliant; doesn't work in IE
                }
                catch(e)
                {
                    x.add(newPlane, null); // IE only
                }
                var lonLat = new OpenLayers.LonLat(document.getElementById("long").value, document.getElementById("lat").value).transform(
                new OpenLayers.Projection("EPSG:4326"),
                map.getProjectionObject());
                var planeID = document.getElementById("plane_ID");
                AddPlaneMarker(planeID,lonLat);
            }
        }

        function init()
        {
            map = new OpenLayers.Map("mapBox");
            map.addLayer(new OpenLayers.Layer.OSM());
            focusPoint = new OpenLayers.LonLat(-81.04818, 29.18710)
            focusPoint.transform(new OpenLayers.Projection("EPSG:4326"), map.getProjectionObject());
            map.setCenter(focusPoint, 14);
        }

        function newLonLat()
        {
            var newValues = prompt("Please specify new location of the Aircraft", "-81.07870 29.17210");
            var theValues = newValues.split(" ");
            var newPixel = map.getLayerPxFromViewPortPx(map.getPixelFromLonLat(new OpenLayers.LonLat(theValues[0], theValues[1]).transform(
            new OpenLayers.Projection("EPSG:4326"),
            map.getProjectionObject())));
            marker.moveTo(newPixel);
        }

        function removePlane()
        {
            var x=document.getElementById("planeList");
            x.remove(x.selectedIndex);
            var planeID = x.options[x.selectedIndex].text;
            RemovePlaneMarker(planeID);
        }
        </script>

        <body onload="init();">
        <div id="mapBox"></div>
        </body>
        <body>
        <br /><div id="demo">
        Aircraft ID: <input type="text" id="plane_ID" value="AA5024"/><br />
        Longitude: &nbsp;<input type="text" id="long" value="-81.04818" /><br />
        Latitude: &nbsp;&nbsp;&nbsp;&nbsp;<input type="text" id="lat" value="29.18710" /><br /><br />
        <dd>&nbsp;&nbsp;&nbsp;&nbsp;<button value="Add Aircraft" OnClick="displayPlane()">Add Aircraft</button></dd>
        <br /><br />
        <h3><dd>Active Planes</dd></h3>
        <select id="planeList" size="10" multiple="multiple" style="text-align:center" ondblclick="newLonLat()">
        <option>----------Plane ID----------</option>
        </select><br />
        <dd><button value="Remove Aircraft" OnClick="removePlane()">Remove Aircraft</button></dd>
        </div>
        </body>

Answer 1

markers和marker看起来不在removePlane()的范围内。

尝试在全局范围内声明它们，并在实例化时删除var。：

<script type="text/javascript">
...
var markers, marker;
...
        function displayPlane()
             ...
             markers = new OpenLayers.Layer.Markers(name);
             ...
             marker = new OpenLayers.Marker(lonLat);
...

每条评论更新：

我其实最喜欢我最后一个选项

~~我会在我自己的Plane对象数组中跟踪它们，这些对象包含对Markers的引用。这样的事情：~~

如何删除openlayer中的特定标记

1 个答案:

每条评论更新：

解决方案更新