这是来自 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。我认为代码片段是解决我之前识别标记问题的一种非常聪明的方法，而且它可能是我现在缺少的一个非常小的东西。任何再次帮助将不胜感激。

<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>

最佳答案

markers和marker看起来它们不在 removePlane() 范围内可用.

尝试在全局范围内声明它们并删除 var当你实例化它们时:

<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:

我实际上最喜欢最后一个选择

~~我会在我自己的 Plane 对象数组中跟踪它们，其中包含对标记的引用。像这样的东西:~~

~~关于javascript - 如何删除 openlayer 中的特定标记，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11040312/~~

javascript - 如何删除 openlayer 中的特定标记

每条评论更新:

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