---

先展示最終效果

一、創建標簽頁

1. 創建一個Tabs/index.vue頁面

<template><div><el-tabs v-model="editableTabsValue" type="card" closable><el-tab-pane:key="item.name"v-for="item in editableTabs":label="item.title":name="item.name"></el-tab-pane></el-tabs></div>
</template><script>
export default {name: "Tabss",data() {return {editableTabsValue: "1",editableTabs: [{title: "首頁",name: "1",content: "首頁",},{title: "Tab 1",name: "2",content: "Tab 1 content",},{title: "Tab 2",name: "3",content: "Tab 2 content",},],tabIndex: 1,};},
};
</script><style scoped>
div{height: auto;
}
</style>

2. 修改Index.vue頁面，在頁面的路由錨點 router-view上方引入此頁面
   
   頁面效果
   

二、點擊菜單展示新標簽頁

1、將標簽數據作為全局使用

（1）將數據放到store.js中，作為全局

import Vue from 'vue'
import Vuex from 'vuex'
import moduleA from './module/moduleA.js';
import moduleB from './module/moduleB.js';Vue.use(Vuex)const state = {username: '牛牛',userState: 0,menu_data: [],isLoadRoute: false,editableTabsValue: '1',editableTabs: [{title: '首頁',name: '首頁',content: '首頁'},{title: 'Tab 1',name: '2',content: 'Tab 1 content'},{title: 'Tab 2',name: '3',content: 'Tab 2 content'}]
}
const mutations = {setLoadRoute(state, data) {state.isLoadRoute = data},setUser(state, name) {state.username = name},setUserState(state, data) {state.userState += data},setMenuData(state, data) {state.menu_data = data},}
const getters = {getUserState(state) {let data;if (state.userState == 0) {data = '無效'} else {data = state.userState + '級'}return data;}
}
const modules = {a: moduleA,b: moduleB
}export default new Vuex.Store({state,mutations,getters,modules
})

（2）Tabs/index.vue 中的這兩個數據 editableTabsValue 和 editableTabs 就從store中獲取

注意：

• 如果你的在data中這樣寫，可能會無法正常顯示，建議用computed 方式來寫。

<template><div><el-tabs v-model="editableTabsValue" type="card" closable><el-tab-pane:key="item.name"v-for="item in editableTabs":label="item.title":name="item.name"></el-tab-pane></el-tabs></div>
</template><script>
export default {name: "Tabs",data() {return {};},computed: {editableTabsValue: {get() {return this.$store.state.editableTabsValue;},set(val) {this.$store.state.editableTabsValue = val;},},editableTabs: {get() {return this.$store.state.editableTabs;},set(val) {this.$store.state.editableTabs = val;},},},
};
</script><style scoped>
div {height: auto;
}
</style>

頁面效果是一樣的

2、菜單點擊增加標簽頁

（1）在 store/index.js 中將寫死的數據editableTabs 內容刪除，只剩下首頁的那條
（2）在mutations添加 editableTabs 數據變更的方法 addEditableTabs，因為我定義的菜單數據的時候，沒有title屬性，所以這里我都用title來代表

參考代碼：

import Vue from 'vue'
import Vuex from 'vuex'
import moduleA from './module/moduleA.js';
import moduleB from './module/moduleB.js';Vue.use(Vuex)const state = {username: '牛牛',userState: 0,menu_data: [],isLoadRoute: false,editableTabsValue: '1',editableTabs: [{title: '首頁',name: '首頁',content: '首頁'}]
}
const mutations = {setLoadRoute(state, data) {state.isLoadRoute = data},setUser(state, name) {state.username = name},setUserState(state, data) {state.userState += data},setMenuData(state, data) {state.menu_data = data},addEditableTabs(state, tab) {state.editableTabs.push({title: tab.name,name: tab.name})state.editableTabsValue = tab.name}
}
const getters = {getUserState(state) {let data;if (state.userState == 0) {data = '無效'} else {data = state.userState + '級'}return data;}
}
const modules = {a: moduleA,b: moduleB
}export default new Vuex.Store({state,mutations,getters,modules
})

（3）給Aside/index.vue菜單增加點事件，selectMenu方法

<template><div style="height: 100%"><el-menubackground-color="#545c64"text-color="#ffffff"active-text-color="#ffd04b"class="el-menu-vertical-demo"router><el-menu-item:index="item.path"v-for="item in menu_data":key="item.name"@click="selectMenu(item)"><i :class="item.icon"></i>{{ item.name }}</el-menu-item></el-menu></div>
</template><script>
export default {name: "Aside",data() {return {};},computed: {menu_data: {get() {return this.$store.state.menu_data;},},},methods: {selectMenu(item) {this.$store.commit("addEditableTabs", item);},},
};
</script><style scoped>
.el-icon-location,
.el-icon-document,
.el-icon-setting {display: inline-flex;align-items: center;justify-content: center;
}
</style>

頁面效果

問題：出現重復菜單名稱標簽

3、處理重復標簽

在store/index.js文件中的addEditableTabs 中判斷，如果數據中已經有了，則不重復添加，只需切換即可

頁面效果

現在就只有兩個標簽了，目前展示正常，但是沒法關閉

4、關閉標簽頁

標簽頁添加關閉事件

在el-tabs標簽中添加 @tab-remove="removeTab"，在method添加對應的方法

<template><div><el-tabsv-model="editableTabsValue"type="card"closable@tab-remove="removeTab"><el-tab-pane:key="item.name"v-for="item in editableTabs":label="item.title":name="item.name"></el-tab-pane></el-tabs></div>
</template><script>
export default {name: "Tabs",data() {return {};},methods: {removeTab(targetName) {let tabs = this.editableTabs;let activeName = this.editableTabsValue;if (activeName === targetName) {tabs.forEach((tab, index) => {if (tab.name === targetName) {let nextTab = tabs[index + 1] || tabs[index - 1];if (nextTab) {activeName = nextTab.name;}}});}this.editableTabsValue = activeName;this.editableTabs = tabs.filter((tab) => tab.name !== targetName);},},computed: {editableTabsValue: {get() {return this.$store.state.editableTabsValue;},set(val) {this.$store.state.editableTabsValue = val;},},editableTabs: {get() {return this.$store.state.editableTabs;},set(val) {this.$store.state.editableTabs = val;},},},
};
</script><style scoped>
div {height: auto;
}
</style>

頁面效果

問題：

1. 選中菜單，側邊欄沒有進行對應的高亮展示
2. 關閉了“一級菜單2”，但是頁面內容還停留在“一級菜單2”，其實就是路由沒有變

三、點擊標簽頁操作

問題1：點擊標簽頁選中菜單進行高亮展示

1. 在Aside/index.vue中給 el-menu 設置屬性 default-active

:default-active="this.$store.state.editableTabsValue"

2. 將原來代碼el-menu-item的index設置為"item.name"

:index="item.name"

3. 加入路由跳轉代碼

因原來菜單點擊，會根據index屬性來跳轉，index原來是path（路由地址），現在index屬性更改為name了，則跳轉不會生效，修改原來的router.js的代碼，動態創建路由加入name屬性（name:item.name），方便跳轉。

修改router/index.js 代碼

let oRouters = router.options.routes;
const buildRouter = ()=>{let data = store.state.menu_data;data.forEach(item=>{let new_router = {path:item.path,name:item.name,component:() => import('./components/'+item.component+'.vue')}oRouters[0].children.push(new_router);})router.addRoutes(oRouters)
}

在Aside/index.vue的 selectMenu方法中，加入路由跳轉代碼（根據name跳轉），僅需一行代碼即可。

selectMenu(item){//點擊菜單跳轉路由this.$router.push({name:item.name})this.$store.commit("addEditableTabs",item);
}

頁面效果，可以實現點擊標簽頁，菜單跟著高亮顯示了

Aside/index.vue 頁面代碼

<template><div style="height: 100%"><el-menubackground-color="#545c64"text-color="#ffffff"active-text-color="#ffd04b"class="el-menu-vertical-demo"router:default-active="this.$store.state.editableTabsValue"><el-menu-item:index="item.name"v-for="item in menu_data":key="item.name"@click="selectMenu(item)"><i :class="item.icon"></i>{{ item.name }}</el-menu-item></el-menu></div>
</template><script>
export default {name: "Aside",data() {return {};},computed: {menu_data: {get() {return this.$store.state.menu_data;},},},methods: {selectMenu(item) {//點擊菜單跳轉路由this.$router.push({ name: item.name });this.$store.commit("addEditableTabs", item);},},
};
</script><style scoped>
.el-icon-location,
.el-icon-document,
.el-icon-setting {display: inline-flex;align-items: center;justify-content: center;
}
</style>

問題2：點擊標簽頁路由也要跳轉

上面遺留的問題2，點擊標簽頁，標簽頁下方的頁面沒有跟著跳轉，下面修改這個問題

1. 在Tabs頁面的 el-tabs 添加 tab-click 事件
2. 添加方法，利用路由的name來跳轉

<template><div><el-tabsv-model="editableTabsValue"type="card"closable@tab-remove="removeTab"@tab-click="clickTab"><el-tab-pane:key="item.name"v-for="item in editableTabs":label="item.title":name="item.name"></el-tab-pane></el-tabs></div>
</template><script>
export default {name: "Tabs",data() {return {};},methods: {removeTab(targetName) {let tabs = this.editableTabs;let activeName = this.editableTabsValue;if (activeName === targetName) {tabs.forEach((tab, index) => {if (tab.name === targetName) {let nextTab = tabs[index + 1] || tabs[index - 1];if (nextTab) {activeName = nextTab.name;}}});}this.editableTabsValue = activeName;this.editableTabs = tabs.filter((tab) => tab.name !== targetName);},clickTab(target) {this.$router.push({ name: target.name });},},computed: {editableTabsValue: {get() {return this.$store.state.editableTabsValue;},set(val) {this.$store.state.editableTabsValue = val;},},editableTabs: {get() {return this.$store.state.editableTabs;},set(val) {this.$store.state.editableTabs = val;},},},
};
</script><style scoped>
div {height: auto;
}
</style>

效果展示

四、解決bug

1. 關閉菜單后，菜單對應的路由沒有跟著跳轉
   僅需在關閉標簽的方法removeTab，最后加上以下代碼

this.$router.push({name:activeName})

2. 首頁不允許關閉
   在關閉標簽的方法removeTab ，執行關閉之前，加入以下代碼

if(targetName=='首頁'){return ;
}

3. 完整removeTab 代碼

removeTab(targetName) {let tabs = this.editableTabs;let activeName = this.editableTabsValue;if(targetName=='首頁'){return ;}if (activeName === targetName) {tabs.forEach((tab, index) => {if (tab.name === targetName) {let nextTab = tabs[index + 1] || tabs[index - 1];if (nextTab) {activeName = nextTab.name;}}});}this.editableTabsValue = activeName;this.editableTabs = tabs.filter(tab => tab.name !== targetName);this.$router.push({name:activeName})
}

4. 還有一個潛藏的bug就是打開、關閉的順序問題，先關閉前面的菜單會報錯，后面解決

報錯代碼如下

Uncaught runtime errors:Avoided redundant navigation to current location: "/index/menu2".NavigationDuplicated: Avoided redundant navigation to current location: "/index/menu2".at createRouterError (webpack-internal:///./node_modules/vue-router/dist/vue-router.esm.js:1720:15)at createNavigationDuplicatedError (webpack-internal:///./node_modules/vue-router/dist/vue-router.esm.js:1708:15)at HTML5History.confirmTransition (webpack-internal:///./node_modules/vue-router/dist/vue-router.esm.js:1946:18)at HTML5History.transitionTo (webpack-internal:///./node_modules/vue-router/dist/vue-router.esm.js:1887:8)at HTML5History.push (webpack-internal:///./node_modules/vue-router/dist/vue-router.esm.js:2165:10)at eval (webpack-internal:///./node_modules/vue-router/dist/vue-router.esm.js:2510:22)at new Promise (<anonymous>)at VueRouter.push (webpack-internal:///./node_modules/vue-router/dist/vue-router.esm.js:2509:12)at VueComponent.removeTab (webpack-internal:///./node_modules/babel-loader/lib/index.js??clonedRuleSet-40.use[0]!./node_modules/@vue/vue-loader-v15/lib/index.js??vue-loader-options!./src/components/Tabs/index.vue?vue&type=script&lang=js:29:20)at invokeWithErrorHandling (webpack-internal:///./node_modules/vue/dist/vue.runtime.esm.js:2903:26)