Merge pull request #7 from PanJiaChen/master

update

README.md

@@ -34,6 +34,8 @@ English | [简体中文](./README.zh-CN.md)
 
 It is a magical vue admin based on the newest development stack of vue, built-in i18n solution, typical templates for enterprise applications, lots of awesome features. It helps you build a large complex Single-Page Applications. I believe whatever your needs are, this project will help you.
 
+**[v4.0](https://github.com/PanJiaChen/vue-element-admin/tree/v4.0) has in beta. It built on vue-cli@3, optimized a lot of code and added a lot of new features. Welcome to use and make suggestions.**
+
 - [Preview](http://panjiachen.github.io/vue-element-admin)
 
 - [Documentation](https://panjiachen.github.io/vue-element-admin-site/)

README.zh-CN.md

@@ -32,6 +32,8 @@
 
 [vue-element-admin](http://panjiachen.github.io/vue-element-admin) 是一个后台集成解决方案，它基于 [vue](https://github.com/vuejs/vue) 和 [element](https://github.com/ElemeFE/element)。它使用了最新的前端技术栈，内置了 i18 国际化解决方案，动态路由，权限验证，提炼了典型的业务模型，提供了丰富的功能组件，它可以帮助你快速搭建企业级中后台产品原型。相信不管你的需求是什么，本项目都能帮助到你。
 
+**[v4.0](https://github.com/PanJiaChen/vue-element-admin/tree/v4.0) 已经进入 beta 测试阶段。 它基于 vue-cli@3 进行构建，优化了大量代码(尤其是权限和 mock)，并且增加了不少新特性。欢迎使用并提出建议。**
+
 - [在线访问](http://panjiachen.github.io/vue-element-admin)
 
 - [使用文档](https://panjiachen.github.io/vue-element-admin-site/zh/)
@@ -52,7 +54,7 @@
 - 桌面端: [electron-vue-admin](https://github.com/PanJiaChen/electron-vue-admin)
 - Typescript版: [vue-typescript-admin-template](https://github.com/Armour/vue-typescript-admin-template) (鸣谢: [@Armour](https://github.com/Armour))
 
-群主 **[圈子](https://jianshiapp.com/circles/1209)** 楼主会经常分享一些技术相关的东西，或者加入[qq 群](https://github.com/PanJiaChen/vue-element-admin/issues/602)
+群主 **[圈子](https://jianshiapp.com/circles/1209)** 楼主会经常分享一些技术相关的东西，或者加入[qq 群](https://github.com/PanJiaChen/vue-element-admin/issues/602)或者关注[微博](https://weibo.com/u/3423485724?is_all=1)
 
 **注意：该项目使用 element-ui@2.3.0+ 版本，所以最低兼容 vue@2.5.0+**
 

src/utils/index.js

@@ -274,7 +274,7 @@ export function debounce(func, wait, immediate) {
  */
 export function deepClone(source) {
   if (!source && typeof source !== 'object') {
-    throw new Error('error arguments', 'shallowClone')
+    throw new Error('error arguments', 'deepClone')
   }
   const targetObj = source.constructor === Array ? [] : {}
   Object.keys(source).forEach(keys => {

src/views/layout/components/Sidebar/SidebarItem.vue

@@ -2,9 +2,9 @@
   <div v-if="!item.hidden" class="menu-wrapper">
 
     <template v-if="hasOneShowingChild(item.children,item) && (!onlyOneChild.children||onlyOneChild.noShowingChildren)&&!item.alwaysShow">
-      <app-link :to="resolvePath(onlyOneChild.path)">
+      <app-link v-if="onlyOneChild.meta" :to="resolvePath(onlyOneChild.path)">
         <el-menu-item :index="resolvePath(onlyOneChild.path)" :class="{'submenu-title-noDropdown':!isNest}">
-          <item v-if="onlyOneChild.meta" :icon="onlyOneChild.meta.icon||(item.meta&&item.meta.icon)" :title="generateTitle(onlyOneChild.meta.title)" />
+          <item :icon="onlyOneChild.meta.icon||(item.meta&&item.meta.icon)" :title="generateTitle(onlyOneChild.meta.title)" />
         </el-menu-item>
       </app-link>
     </template>