OpenLayers自定义图层切换控件实现指南

完整代码示例与效果展示

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 <title>图层切换控件</title>
 <link rel="stylesheet" href="../v5.3.0/css/ol.css" />
 <script src="../v5.3.0/build/ol.js"></script>
</head>
<body>
 <div id="controls">
 <input type="checkbox" id="osm" checked />OpenStreetMap
 <input type="checkbox" id="bingmap" />Bing Map
 <input type="checkbox" id="stamen" />Stamen Map
 </div>
 <div id="map"></div>
 
 <script>
 let map = new ol.Map({
  target: 'map', // 关联到对应的div容器
  layers: [
  new ol.layer.Tile({ // OpenStreetMap图层
   source: new ol.source.OSM() 
  }),
  new ol.layer.Tile({ // Bing Map图层
   source: new ol.source.BingMaps({
   key: '略', // 可以自行到Bing Map官网申请key
   imagerySet: 'Aerial'
   }),
   visible: false // 先隐藏该图层
  }),
  new ol.layer.Tile({
   source: new ol.source.Stamen({
   layer: 'watercolor'
   }),
   visible: false // 先隐藏该图层
  })
  ],
  view: new ol.View({ // 地图视图
  projection: 'EPSG:3857',
  center: [0, 0],
  zoom: 0
  })
 });
 
 let controls = document.getElementById('controls'); 
 // 事件委托
 controls.addEventListener('click', (event) => {
  if(event.target.checked){ // 如果选中某一复选框
  // 通过DOM元素的id值来判断应该对哪个图层进行显示
  switch(event.target.id){
   case "osm": 
   map.getLayers().item(0).setVisible(true);
   break;
   case "bingmap":
   map.getLayers().item(1).setVisible(true);
   break;
   case "stamen": 
   map.getLayers().item(2).setVisible(true);
   break;
   default: break;
  }
  }else{  // 如果取消某一复选框
  // 通过DOM元素的id值来判断应该对哪个图层进行隐藏
  switch(event.target.id){
   case "osm": 
   map.getLayers().item(0).setVisible(false);
   break;
   case "bingmap":
   map.getLayers().item(1).setVisible(false);
   case "stamen": 
   map.getLayers().item(2).setVisible(false);
   default: break;
  }
  } 
 });
 </script>
</body>
</html>