修改需求

src/model/app.vue

@@ -38,6 +38,7 @@ export const Model = defineComponent({
       if (newURL !== url.value) {
         setTimeout(() => {
           const hook = (iframeRef.value?.contentWindow as any)?.beforeDestroy
+          console.error("当前iframe的beforeDestroy", hook)
           if (hook) {
             hook()
             console.log("赋值1")
@@ -52,7 +53,6 @@ export const Model = defineComponent({
 
     watchEffect(() => {
       if (!scene.value) {
-        url.value = "";
         return setUrl("");
       }
       const type = scene.value.type