update：机械臂案例代码结构的修改

src/examples/movingTarget/robotArmAnimation/robotArmAnimation-function.js

-export function addRobotArmAnimation() {
-    const script = document.createElement('script');
-    script.src = 'https://cesium.com/downloads/cesiumjs/releases/1.99/Build/Cesium/Cesium.js';
-    script.onload = () => {
-        window.Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI3Njg4ZWU5Yi1iZDhiLTRhYmUtOTRiYS04YjM5NmUwNjVmMDMiLCJpZCI6MjI3MzQ3LCJpYXQiOjE3MjA1MjA4Mjh9.E5XW4LnwgfVAaBC-znaYr61m4yK0-j2qEQhi9qwFFPE'
-
-        const viewer = new window.Cesium.Viewer('cesiumContainer', {
-            infoBox: false,
-            shouldAnimate: true
-        });
-
-        const czml = [
-            {
-                id: "document",
-                name: "robotArm",
-                version: "1.0",
-                clock: {
-                  interval: "2019-08-28T04:00:00Z/2019-08-28T04:20:00Z",
-                  currentTime: "2019-08-28T04:00:00.00Z",
-                  multiplier: 1,
-                  range: "LOOP_STOP",
-                  step: "SYSTEM_CLOCK_MULTIPLIER"
-                 }
-            },
-            {
-                id: "robotArm",
-                name: "robotArmAnimation",
-                description: "<p>this is a ship</p>",
-                availability: "2019-08-28T04:00:00Z/2019-08-28T04:20:00Z",
-                position: {
-                    cartographicDegrees: [120, 30, 0]
-                },
-                model: {
-                    show: true,
-                    gltf: [
-                        {
-                            interval: "2019-08-28T04:00:00Z/9999-12-31T23:59:59.9999999Z",
-                            uri: 'https://raw.githubusercontent.com/jinlinchao123/Cesium-assets/main/3Dmodel/Station.glb'
-                        }
-                    ],
-                    minimumPixelSize: 128,
-                    scale: 1,
-                    runAnimations: true
+export function addRobotArmAnimation(viewer) {
+    const czml = [
+        {
+            id: "document",
+            name: "robotArm",
+            version: "1.0",
+            clock: {
+                interval: "2019-08-28T04:00:00Z/2019-08-28T04:20:00Z",
+                currentTime: "2019-08-28T04:00:00.00Z",
+                multiplier: 1,
+                range: "LOOP_STOP",
+                step: "SYSTEM_CLOCK_MULTIPLIER"
                 }
+        },
+        {
+            id: "robotArm",
+            name: "robotArmAnimation",
+            description: "<p>this is a ship</p>",
+            availability: "2019-08-28T04:00:00Z/2019-08-28T04:20:00Z",
+            position: {
+                cartographicDegrees: [120, 30, 0]
             },
-        ];
-
-        var dataSourcePromise = viewer.dataSources.add(Cesium.CzmlDataSource.load(czml));
-        dataSourcePromise.then(function (dataSource) {
-            // 根据模型所在的实体去进行加载
-            viewer.trackedEntity = dataSource.entities.getById('robotArm');
-        }).catch(function (error) {
-          console.error(error);
-        });
-
-    };
-    document.head.appendChild(script);
+            model: {
+                show: true,
+                gltf: [
+                    {
+                        interval: "2019-08-28T04:00:00Z/9999-12-31T23:59:59.9999999Z",
+                        uri: 'https://raw.githubusercontent.com/jinlinchao123/Cesium-assets/main/3Dmodel/Station.glb'
+                    }
+                ],
+                minimumPixelSize: 128,
+                scale: 1,
+                runAnimations: true
+            }
+        },
+    ];
 
-    const link = document.createElement('link');
-    link.rel = 'stylesheet';
-    link.href = 'https://cesium.com/downloads/cesiumjs/releases/1.119/Build/Cesium/Widgets/widgets.css';
-    document.head.appendChild(link);
+    var dataSourcePromise = viewer.dataSources.add(Cesium.CzmlDataSource.load(czml));
+    dataSourcePromise.then(function (dataSource) {
+        // 根据模型所在的实体去进行加载
+        viewer.trackedEntity = dataSource.entities.getById('robotArm');
+    }).catch(function (error) {
+        console.error(error);
+    });
 }

src/examples/movingTarget/robotArmAnimation/robotArmAnimation.vue

 <template>
     <div id="cesiumContainer" class="cesium-container"></div>
 </template>
+
 <script setup>
 import { onMounted } from 'vue';
 import { addRobotArmAnimation } from './function';
+
+let viewer;
+
 onMounted(() => {
-    addRobotArmAnimation()
+    const script = document.createElement('script');
+    script.src = 'https://cesium.com/downloads/cesiumjs/releases/1.99/Build/Cesium/Cesium.js';
+    script.onload = () => {
+        window.Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI3Njg4ZWU5Yi1iZDhiLTRhYmUtOTRiYS04YjM5NmUwNjVmMDMiLCJpZCI6MjI3MzQ3LCJpYXQiOjE3MjA1MjA4Mjh9.E5XW4LnwgfVAaBC-znaYr61m4yK0-j2qEQhi9qwFFPE'
+
+        viewer = new window.Cesium.Viewer('cesiumContainer', {
+            infoBox: false,
+            shouldAnimate: true
+        });
+
+        addRobotArmAnimation(viewer)
+
+    };
+    document.head.appendChild(script);
+    const link = document.createElement('link');
+    link.rel = 'stylesheet';
+    link.href = 'https://cesium.com/downloads/cesiumjs/releases/1.119/Build/Cesium/Widgets/widgets.css';
+    document.head.appendChild(link);
 });
 </script>
 
 <style>
 .cesium-container {
-width: 100%;
-height: 100vh;
+    width: 100%;
+    height: 100vh;
 }
 </style>
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