这个主题，早在一年前就已经创建，也写了一些内容，碍于在应用上体验始终不够完美，一直只存着草稿。
经过多个平台实践，多次迭代，一些功能加了又减了，最后还是回归了最精简的版本，已适用于大部分的场景，若有需要，可自行扩展。
关键逻辑
- 使用 keep-alive 来缓存各标签页
- 通过 vue-router 的 beforeEach 方法来更新标签信息
- 通过 vuex 来保存标签信息
- 通过 vuex 来使关闭页不被缓存
核心代码
定义 vuex 的跨页变量（store/index.js)
import Vuex from 'vuex'
Vue.use(Vuex)
export default new Vuex.Store({
state: {
worktab: {
list: [
{
name: 'my',
tabname: '主页',
path: '/page/my'
}
],
current: {
name: 'my',
tabname: '主页',
path: '/page/my'
}
},
closingPage: ''
},
mutations: {
worktabRemove (state, p) {
// 关闭标签
let ind = state.worktab.list.findIndex(s => s.name === p)
if (ind > -1) {
// 清理 keep alive - start
state.closingPage = state.worktab.list[ind].name
// 清理 keep alive - end
state.worktab.list.splice(ind, 1)
}
if (p === state.worktab.current.name) {
// 是当前页，返回上一页
router.back()
}
},
worktabRoute (state, p) {
let ind = state.worktab.list.findIndex(s => s.name === p.to.name)
if (ind > -1) {
// 标签已存在
state.worktab.current = state.worktab.list[ind]
} else {
// 标签不存在，现在新建
state.worktab.list.push(p.to)
state.worktab.current = p.to
}
state.closingPage = ''
}
},
actions: {
worktabRemove ({commit}, p) {
commit('worktabRemove', p)
},
worktabRoute ({commit}, p) {
commit('worktabRoute', p)
}
},
strict: debug
})
定义 worktab 标签栏组件，在主容器引用
<template>
<div class="cp-worktab">
<el-tabs v-model="activeTab" type="card" @tab-remove="removeTab" @tab-click="clickTab">
<el-tab-pane
v-for="t in worktabs"
:key="t.name"
:label="t.tabname"
:name="t.name"
:closable="t.name !== 'my'"
>
</el-tab-pane>
</el-tabs>
</div>
</template>
<script>
export default {
created () {
// 进来不是主页时等list加载后再更新一次current
setTimeout(() => {
this.activeTab = this.$store.state.worktab.current.name
}, 500)
},
watch: {
'$store.state.worktab.current' (tab) {
this.activeTab = tab.name
}
},
computed: {
worktabs () {
return this.$store.state.worktab.list
}
},
data () {
return {
activeTab: 'name'
}
},
methods: {
clickTab (tab) {
this.$router.push(this.worktabs[1 * tab.index].path)
},
removeTab (name) {
this.$store.dispatch('worktabRemove', name)
}
}
}
</script>
路由控制通过beforeEach来更新标签信息
import Vue from 'vue'
import VueRouter from 'vue-router'
import store from '@/store'
import Page from '../components/console/Page.vue'
import My from '../components/console/My.vue'
Vue.use(VueRouter)
// 关联路由与组件
const routes = [
{
name: 'root',
path: '/'
},
{
path: '/page',
component: Page,
children: [
{
name: 'my',
path: 'my',
component: My,
meta: {
tabname: '个人主页'
}
}
]
}
]
// 创建路由器
const router = new VueRouter({
routes
})
router.beforeEach((to, from, next) => {
next()
store.dispatch('worktabRoute', {
to: {
name: to.name ? to.name : '',
tabname: (to.meta && to.meta.tabname) ? to.meta.tabname : '',
path: to.path
},
from: {
name: from.name ? from.name : '',
tabname: (from.meta && from.meta.tabname) ? from.meta.tabname : '',
path: from.path
}
})
return
})
export default router
主容器通过 closingPage 变量来及时清理关闭页面的缓存
<template>
<div>
<cp-worktab></cp-worktab>
<div class="cp-content">
<keep-alive :exclude="closingPage">
<router-view></router-view>
</keep-alive>
</div>
</div>
</template>
<script>
import Worktab from '../module/Worktab'
export default {
components: {
cpWorktab: Worktab
},
data () {
return {}
},
computed: {
closingPage () {
return this.$store.state.closingPage
}
}
}
</script>
总结
以上所述是小编给大家介绍的Vue + Elementui实现多标签页共存的方法，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的！
