前言
之前写过一篇openlayers4版本的地图切换效果，但是由于是封装一层 js代码写的，很多初学者看起来比较有点吃力，所以本篇文章重新写一篇地图切换效果，直接基于最新版本openlayers6写的，纯粹html + js + css形式，没有任何封装。
内容概览
1.基于openlayers6实现地图切换展示效果
2.源代码demo下载
效果图如下：
大概实现思路如下：地图初始化配置加载各种在线地图，比如天地图，arcgis地图，谷歌地图，高德地图，百度地图，OSM地图等等，默认图层只显示一个地图，其他在线地图默认隐藏不可见状态；js自定义一个底图切换的控件，底图切换时候，动态设置图层的隐藏以及可见性，达到底图切换目的。
- 部分核心代码，完整的见源码demo下载
var satelliteLayer = new ol.layer.Tile({ //天地图卫星图 visible: true, source: new ol.source.XYZ({ url: 'http://t{0-7}.tianditu.com/DataServer?T=img_w&x={x}&y={y}&l={z}&tk=7786923a385369346d56b966bb6ad62f', crossOrigin:"anonymous" }) }); var satelliteLabelLayer = new ol.layer.Tile({ visible: false, source: new ol.source.XYZ({ //天地图卫星图注记 url: 'http://t{0-7}.tianditu.com/DataServer?T=cia_w&x={x}&y={y}&l={z}&tk=7786923a385369346d56b966bb6ad62f', crossOrigin:"anonymous" }) }); var streetLayer = new ol.layer.Tile({ //天地图街道图 visible: false, source: new ol.source.XYZ({ url: 'http://t{0-7}.tianditu.com/DataServer?T=vec_w&x={x}&y={y}&l={z}&tk=7786923a385369346d56b966bb6ad62f', crossOrigin:"anonymous" }) }); var streetLabelLayer = new ol.layer.Tile({ visible: false, source: new ol.source.XYZ({ //天地图街道图注记 url: 'http://t{0-7}.tianditu.com/DataServer?T=cva_w&x={x}&y={y}&l={z}&tk=7786923a385369346d56b966bb6ad62f', crossOrigin:"anonymous" }) }); var terLayer = new ol.layer.Tile({ visible: false, source: new ol.source.XYZ({ //天地图地形图 url: 'http://t{0-7}.tianditu.com/DataServer?T=ter_w&x={x}&y={y}&l={z}&tk=7786923a385369346d56b966bb6ad62f', crossOrigin:"anonymous" }) }); var osmLayer = new ol.layer.Tile({//OSM地图 visible: false, source: new ol.source.OSM() }); var arcgisImgLayer = new ol.layer.Tile({//arcgis影像 visible: false, source: new ol.source.XYZ({ url: 'https://server.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}', crossOrigin:"anonymous" }) }); var arcgisVecLayer = new ol.layer.Tile({//arcgis街道 visible: false, source: new ol.source.XYZ({ url: 'http://cache1.arcgisonline.cn/arcgis/rest/services/ChinaOnlineCommunity/MapServer/tile/{z}/{y}/{x}', crossOrigin:"anonymous" }) }); var googleImgLayer = new ol.layer.Tile({//谷歌影像 visible: false, source: new ol.source.XYZ({ url: 'http://www.google.cn/maps/vt?lyrs=s@189&gl=cn&x={x}&y={y}&z={z}', crossOrigin:"anonymous" }) }); var googleVecLayer = new ol.layer.Tile({//谷歌街道 visible: false, source: new ol.source.XYZ({ url: 'http://www.google.cn/maps/vt?lyrs=m@189&gl=cn&x={x}&y={y}&z={z}', crossOrigin:"anonymous" }) }); var gaodeImgLayer = new ol.layer.Tile({//高德影像 visible: false, source: new ol.source.XYZ({ url: 'http://webst0{1-4}.is.autonavi.com/appmaptile?style=6&x={x}&y={y}&z={z}', crossOrigin:"anonymous" }) }); var gaodeVecLayer = new ol.layer.Tile({//高德街道 visible: false, source: new ol.source.XYZ({ url: 'http://webrd0{1-4}.is.autonavi.com/appmaptile?lang=zh_cn&size=1&scale=1&style=7&x={x}&y={y}&z={z}', crossOrigin:"anonymous" }) }); var layers = [ satelliteLayer, streetLayer, terLayer, satelliteLabelLayer, streetLabelLayer, osmLayer, arcgisImgLayer, arcgisVecLayer, googleImgLayer, googleVecLayer, gaodeImgLayer, gaodeVecLayer, ]; //地图创建 var map = new ol.Map({ layers: layers, target: 'map', view: new ol.View({ projection: 'EPSG:4326', center: [103.49033880652411, 34.034467489614684], zoom: 7 }) }); var mapconfig = [ {"layer_id":"tmap_img_w","label":"天地卫星","className":"imgType"},//天地图卫星图 {"layer_id":"tmap_vec_w","label":"天地街道","className":"vecType"},//天地图街道图 {"layer_id":"tmap_img_w_h","label":"卫星混合","className":"imgType"},//天地图卫星混合图 {"layer_id":"tmap_ter_w","label":"天地地形","className":"terType"},//天地图地形图 {"layer_id":"tmap_ter_w_h","label":"地形混合","className":"terType"},//天地图地形混合图 {"layer_id":"osm","label":"OSM","className":"vecType"},//OSM地图 {"layer_id":"arcgis_img","label":"esri影像","className":"imgType"},//arcgis影像 {"layer_id":"arcgis_vec","label":"esri街道","className":"vecType"},//arcgis街道 {"layer_id":"google_img","label":"谷歌影像","className":"imgType"},//谷歌影像 {"layer_id":"google_vec","label":"谷歌街道","className":"vecType"},//谷歌街道 {"layer_id":"gaode_img","label":"高德影像","className":"imgType"},//高德影像 {"layer_id":"gaode_vec","label":"高德街道","className":"vecType"},//高德街道 ]; loadSwitcherMap(mapconfig);//底图切换控件加载 /** * 地图切换控件 */ function loadSwitcherMap(data){ //设置底图不同类型 var baseLayerSwitcherToolbar = new BaseLayerSwitcherToolBar({ data: data }); document.getElementById("map").appendChild(baseLayerSwitcherToolbar.target); baseLayerSwitcherToolbar.onItemClick = function(itemData,index,element){ var data = itemData; console.log(data); switch (data.layer_id) { case "tmap_img_w"://卫星 satelliteLayer.setVisible(true); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); osmLayer.setVisible(false); arcgisImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); googleImgLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "tmap_vec_w"://地图 satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(true); streetLabelLayer.setVisible(true); terLayer.setVisible(false); osmLayer.setVisible(false); arcgisImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); googleImgLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "tmap_img_w_h"://卫星混合 satelliteLayer.setVisible(true); satelliteLabelLayer.setVisible(true); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); osmLayer.setVisible(false); arcgisImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); googleImgLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "tmap_ter_w"://地形 satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(true); osmLayer.setVisible(false); arcgisImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); googleImgLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "tmap_ter_w_h"://地形混合 satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(true); terLayer.setVisible(true); osmLayer.setVisible(false); arcgisImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); googleImgLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "osm"://OSM osmLayer.setVisible(true); satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); arcgisImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); googleImgLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "arcgis_img"://arcgis影像 arcgisImgLayer.setVisible(true); osmLayer.setVisible(false); satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); arcgisVecLayer.setVisible(false); googleImgLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "arcgis_vec"://arcgis街道 arcgisVecLayer.setVisible(true); arcgisImgLayer.setVisible(false); osmLayer.setVisible(false); satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); googleImgLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "google_img"://谷歌影像 googleImgLayer.setVisible(true); arcgisVecLayer.setVisible(false); arcgisImgLayer.setVisible(false); osmLayer.setVisible(false); satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "google_vec"://谷歌影像 googleVecLayer.setVisible(true); googleImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); arcgisImgLayer.setVisible(false); osmLayer.setVisible(false); satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "gaode_img"://高德影像 gaodeImgLayer.setVisible(true); googleVecLayer.setVisible(false); googleImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); arcgisImgLayer.setVisible(false); osmLayer.setVisible(false); satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; case "gaode_vec"://高德街道 gaodeVecLayer.setVisible(true); gaodeImgLayer.setVisible(false); googleVecLayer.setVisible(false); googleImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); arcgisImgLayer.setVisible(false); osmLayer.setVisible(false); satelliteLayer.setVisible(false); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); break; default: satelliteLayer.setVisible(true); satelliteLabelLayer.setVisible(false); streetLayer.setVisible(false); streetLabelLayer.setVisible(false); terLayer.setVisible(false); osmLayer.setVisible(false); arcgisImgLayer.setVisible(false); arcgisVecLayer.setVisible(false); googleImgLayer.setVisible(false); googleVecLayer.setVisible(false); gaodeImgLayer.setVisible(false); gaodeVecLayer.setVisible(false); break; } };