修改

src/layout/parts/Header.vue

@@ -18,6 +18,7 @@
               </el-dropdown-menu>
             </template>
           </el-dropdown>
+          <el-button style="margin: 0 5px" size="small" type="primary" plain @click="toView">大屏展示</el-button>
           <span>
             {{ user && user._id ? user.nick_name : '游客' }}
           </span>
@@ -40,6 +41,10 @@ const logout = () => {
   tagsViewStore.delAllViews()
   router.push('/login')
 }
+// 查看大屏
+const toView = () => {
+  window.open(`/screen`)
+}
 </script>
 <style scoped lang="scss">
 .main {