fix 80650

src/App.vue

@@ -23,6 +23,7 @@ import { Locale } from 'vant'
 import zhCN from 'vant/es/locale/lang/zh-CN'
 import enUS from 'vant/es/locale/lang/en-US'
 import zh_CN from 'ant-design-vue/lib/locale-provider/zh_CN'
+import * as dd from 'dingtalk-jsapi' // 解决document.title
 
 const ZH = 'zh-CN'
 const EN = 'en-US'
@@ -41,10 +42,6 @@ export default {
     Locale.use('zh-CN', zhCN)
     this.$i18n.locale = ZH
   },
-  mounted () {
-    // 修改顶部标题
-    document.title = this.pageTitle
-  },
   computed: {
     // 是否中文
     isChinese () {
@@ -74,6 +71,11 @@ export default {
       return !!this.$route.meta.isWhiteNavBar
     }
   },
+  watch: {
+    pageTitle (val) {
+      this.changeTitle(val)
+    }
+  },
   methods: {
     // 返回上一层
     handleBack () {
@@ -92,6 +94,13 @@ export default {
       Locale.use(targetLang, vantLang)
       // 更新i18n语言
       this.$i18n.locale = targetLang
+    },
+    changeTitle (title) {
+      if (window.navigator.userAgent.includes('DingTalk')) {
+        dd.biz.navigation.setTitle({ title })
+      } else {
+        document.title = title
+      }
     }
   }
 }