OpenLayers添加和删除控件

<!DOCTYPE html>

<html>

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=utf-8">

        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">

        <meta name="apple-mobile-web-app-capable" content="yes">

        <title>添加和删除控件</title>

        <link rel="stylesheet" href="./OpenLayers-2.12/theme/default/style.css" type="text/css" />

        <link rel="stylesheet" href="./css/style.css" type="text/css">

        <style>

        /* round corners of layer switcher, and make it transparent */

        .olControlLayerSwitcher .layersDiv {

            border-radius: 10px 0 0 10px;

            opacity: 0.75;

            filter: alpha(opacity=75);

        }

        </style>

        <script src="./OpenLayers-2.12/lib/OpenLayers.js"></script>

        <script type="text/javascript">

            var map;

            function init(){

                map = new OpenLayers.Map('map', {

                    controls: [

                        new OpenLayers.Control.Navigation(),

                        new OpenLayers.Control.PanZoomBar(),

                        new OpenLayers.Control.LayerSwitcher({'ascending':false}),

                        new OpenLayers.Control.Permalink(),

                        new OpenLayers.Control.ScaleLine(),

                        new OpenLayers.Control.Permalink('permalink'),

                        new OpenLayers.Control.MousePosition(),

                        new OpenLayers.Control.OverviewMap(),

                        new OpenLayers.Control.KeyboardDefaults()

                    ],

                    numZoomLevels: 6

                });

                var ol_wms = new OpenLayers.Layer.WMS(

                    "OpenLayers WMS",

                    "http://vmap0.tiles.osgeo.org/wms/vmap0",

                    {layers: 'basic'}

                );

                var gwc = new OpenLayers.Layer.WMS(

                    "Global Imagery",

                    "http://maps.opengeo.org/geowebcache/service/wms",

                    {layers: "bluemarble"},

                    {tileOrigin: new OpenLayers.LonLat(-180, -90)}

                );

                var dm_wms = new OpenLayers.Layer.WMS(

                    "DM Solutions Demo",

                    "http://www2.dmsolutions.ca/cgi-bin/mswms_gmap",

                    {layers: "bathymetry,land_fn,park,drain_fn,drainage," +

                             "prov_bound,fedlimit,rail,road,popplace",

                     transparent: "true", format: "image/png"},

                    {visibility: false}

                );

                map.addLayers([ol_wms, gwc, dm_wms]);

                if (!map.getCenter()) {

                    map.zoomToMaxExtent();

                }

            }

        </script>

    </head>

    <body onload="init()">

        <div id="tags">

            control, basic

        </div>

        <div id="map" class="smallmap"></div>

        <div id="docs"></div>

    </body>

</html>
巴特西

OpenLayers添加和删除控件

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