console 命令行工具 X clear
console
<!DOCTYPE html>
<html lang="en">

  <head>
    <meta charset="utf-8">
    <!-- Include the CesiumJS JavaScript and CSS files -->
    <script src="https://cesium.com/downloads/cesiumjs/releases/1.77/Build/Cesium/Cesium.js"></script>
    <link href="https://cesium.com/downloads/cesiumjs/releases/1.77/Build/Cesium/Widgets/widgets.css" rel="stylesheet">
    <style>
      html,body,
      #cesiumContainer{
        width: 100%;
        height: 100%;
        padding: 0%;
        margin: 0%;
      }
    </style>
  </head>

  <body>
    <div id="cesiumContainer"></div>
   <script>
    Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiJkNTIzYmRiMi1hNmIyLTRhNjEtYmEyYi0wYmJlY2Q5MjhkMzEiLCJpZCI6NDEyODEsImlhdCI6MTYwOTkzMDM0M30.Zc_xki4U6vm5GYrDLkCXR842JXhmN6_hzO2huUbEI_I';

    const viewer = new Cesium.Viewer('cesiumContainer', {
        terrainProvider: new Cesium.EllipsoidTerrainProvider({}),
    
    });

    // 将三维球定位到贵州
    viewer.camera.flyTo({
        destination: Cesium.Cartesian3.fromDegrees(106.6, 26.6, 800000.0),
    });

    // viewer.imageryLayers.removeAll()
    let Img = new Cesium.WebMapTileServiceImageryProvider({//天地图影像底图
        url: "http://t0.tianditu.gov.cn/img_w/wmts?tk=d6d336cb92553dc6ca7b1c8fcbc21a0c",
        layer: "img",
        style: "default",
        tileMatrixSetID: "w",
        format: "tiles",
        maximumLevel:18
      });
    viewer.imageryLayers.addImageryProvider(Img);
    let rrr=  new Cesium.ArcGisMapServerImageryProvider({
            url : 'https://58.42.237.175:6443/geoscene/rest/services/dem/GZ_DEM_RED_16M_S/MapServer',
            // 如果需要处理跨域问题，可以添加如下配置
            enablePickFeatures : true,
            crossOrigin : 'anonymous'
        })
        viewer.imageryProvider.addImageryProvider(rrr)
  
  </script>
  </body>
</html>