这篇文章主要讲解了“vue怎么实现tagsview多页签导航功能”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“vue怎么实现tagsview多页签导航功能”吧！
利用Vue的内置组件keepalive和routeLink解决，数据是通过vuex进行管理。
在…\store\modules文件夹下新建一个tags-view.js，里面定义相关标签新建、关闭的操作方法，代码如下（示例）：
const state = { // 用户访问过的页面 就是标签栏导航显示的一个个 tag 数组集合 visitedViews: [], // 实际 keep-alive 的路由。可以在配置路由的时候通过 meta.noCache 来设置是否需要缓存这个路由 默认都缓存。 cachedViews: [] } const mutations = { // 添加标签 ADD_VISITED_VIEW: (state, view) => { // 如果标签跳转的路由存在就不添加，否则就添加进标签组 if (state.visitedViews.some(v => v.path === view.path)) return state.visitedViews.push( Object.assign({}, view, { title: view.meta.title || 'no-name' }) ) }, // 添加缓存标签 ADD_CACHED_VIEW: (state, view) => { // 已存在缓存就不缓存了 if (state.cachedViews.includes(view.name)) return if (view.meta && !view.meta.noCache) { state.cachedViews.push(view.name) } }, // 删除选择的标签 DEL_VISITED_VIEW: (state, view) => { for (const [i, v] of state.visitedViews.entries()) { if (v.path === view.path) { state.visitedViews.splice(i, 1) break } } }, // 删除缓存标签 DEL_CACHED_VIEW: (state, view) => { const index = state.cachedViews.indexOf(view.name) index > -1 && state.cachedViews.splice(index, 1) }, // 删除其它标签 DEL_OTHERS_VISITED_VIEWS: (state, view) => { state.visitedViews = state.visitedViews.filter(v => { return v.meta.affix || v.path === view.path }) }, // 删除其它缓存标签 DEL_OTHERS_CACHED_VIEWS: (state, view) => { const index = state.cachedViews.indexOf(view.name) if (index > -1) { state.cachedViews = state.cachedViews.slice(index, index + 1) } else { state.cachedViews = [] } }, // 删除所有标签 DEL_ALL_VISITED_VIEWS: state => { // 过滤出固定的标签，只保留固定标签 const affixTags = state.visitedViews.filter(tag => tag.meta.affix) state.visitedViews = affixTags }, // 删除所有缓存标签 DEL_ALL_CACHED_VIEWS: state => { state.cachedViews = [] }, UPDATE_VISITED_VIEW: (state, view) => { for (let v of state.visitedViews) { if (v.path === view.path) { v = Object.assign(v, view) break } } }, // 删除右侧标签 DEL_RIGHT_VIEWS: (state, view) => { const index = state.visitedViews.findIndex(v => v.path === view.path) if (index === -1) { return } state.visitedViews = state.visitedViews.filter((item, idx) => { if (idx <= index || (item.meta && item.meta.affix)) { return true } const i = state.cachedViews.indexOf(item.name) if (i > -1) { state.cachedViews.splice(i, 1) } return false }) }, // 删除左侧标签 DEL_LEFT_VIEWS: (state, view) => { const index = state.visitedViews.findIndex(v => v.path === view.path) if (index === -1) { return } state.visitedViews = state.visitedViews.filter((item, idx) => { if (idx >= index || (item.meta && item.meta.affix)) { return true } const i = state.cachedViews.indexOf(item.name) if (i > -1) { state.cachedViews.splice(i, 1) } return false }) } } const actions = { // 新增当前路由标签和标签缓存 addView({ dispatch }, view) { dispatch('addVisitedView', view) dispatch('addCachedView', view) }, // 新增当前路由标签 addVisitedView({ commit }, view) { commit('ADD_VISITED_VIEW', view) }, // 新增当前路由标签缓存 addCachedView({ commit }, view) { commit('ADD_CACHED_VIEW', view) }, // 删除当前路由标签和标签缓存 delView({ dispatch, state }, view) { return new Promise(resolve => { dispatch('delVisitedView', view) dispatch('delCachedView', view) resolve({ visitedViews: [...state.visitedViews], cachedViews: [...state.cachedViews] }) }) }, // 删除当前路由标签 delVisitedView({ commit, state }, view) { return new Promise(resolve => { commit('DEL_VISITED_VIEW', view) resolve([...state.visitedViews]) }) }, // 删除当前路由标签缓存 delCachedView({ commit, state }, view) { return new Promise(resolve => { commit('DEL_CACHED_VIEW', view) resolve([...state.cachedViews]) }) }, // 删除其他路由标签和标签缓存 delOthersViews({ dispatch, state }, view) { return new Promise(resolve => { dispatch('delOthersVisitedViews', view) dispatch('delOthersCachedViews', view) resolve({ visitedViews: [...state.visitedViews], cachedViews: [...state.cachedViews] }) }) }, // 删除其他路由标签 delOthersVisitedViews({ commit, state }, view) { return new Promise(resolve => { commit('DEL_OTHERS_VISITED_VIEWS', view) resolve([...state.visitedViews]) }) }, // 删除其他路由标签缓存 delOthersCachedViews({ commit, state }, view) { return new Promise(resolve => { commit('DEL_OTHERS_CACHED_VIEWS', view) resolve([...state.cachedViews]) }) }, // 删除所有路由标签和标签缓存 delAllViews({ dispatch, state }, view) { return new Promise(resolve => { dispatch('delAllVisitedViews', view) dispatch('delAllCachedViews', view) resolve({ visitedViews: [...state.visitedViews], cachedViews: [...state.cachedViews] }) }) }, // 删除所有路由标签 delAllVisitedViews({ commit, state }) { return new Promise(resolve => { commit('DEL_ALL_VISITED_VIEWS') resolve([...state.visitedViews]) }) }, // 删除所有路由标签缓存 delAllCachedViews({ commit, state }) { return new Promise(resolve => { commit('DEL_ALL_CACHED_VIEWS') resolve([...state.cachedViews]) }) }, updateVisitedView({ commit }, view) { commit('UPDATE_VISITED_VIEW', view) }, // 删除右侧路由标签缓存 delRightTags({ commit }, view) { return new Promise(resolve => { commit('DEL_RIGHT_VIEWS', view) resolve([...state.visitedViews]) }) }, // 删除左侧路由标签缓存 delLeftTags({ commit }, view) { return new Promise(resolve => { commit('DEL_LEFT_VIEWS', view) resolve([...state.visitedViews]) }) }, } export default { namespaced: true, state, mutations, actions }在store 目录下 index.js 文件修改，代码如下（示例）：
import Vue from 'vue' import Vuex from 'vuex' ... // 新加 import tagsView from './modules/tags-view' Vue.use(Vuex) const store = new Vuex.Store({ modules: { ... // 新加 tagsView }, getters }) export default store在 layout/components 目录下新建目录 TabsView，在该目录下新建 index.vue 文件，代码如下（示例）：
<template> <div id="tags-view-container" class="tags-view-container"> <!-- 路由标签显示区域（滚动）组件 --> <scroll-pane ref="scrollPane" class="tags-view-wrapper" @scroll="handleScroll"> <router-link v-for="tag in visitedViews" ref="tag" :key="tag.path" :class="isActive(tag)?'active':''" :to="{ path: tag.path, query: tag.query, fullPath: tag.fullPath }" tag="span" class="tags-view-item" : @click.middle.native="!isAffix(tag)?closeSelectedTag(tag):''" @contextmenu.prevent.native="openMenu(tag,$event)" > {{ tag.title }} <!-- 这个地方一定要click加个stop阻止，不然会因为事件冒泡一直触发父元素的点击事件，无法跳转另一个路由 --> <span v-if="!isAffix(tag)" class="el-icon-close" @click.prevent.stop="closeSelectedTag(tag)" /> </router-link> </scroll-pane> <ul v-show="visible" : class="contextmenu"> <li @click="refreshSelectedTag(selectedTag)"><i class="el-icon-refresh-right"></i> 刷新页面</li> <li v-if="!isAffix(selectedTag)" @click="closeSelectedTag(selectedTag)"><i class="el-icon-close"></i> 关闭当前</li> <li @click="closeOthersTags"><i class="el-icon-circle-close"></i> 关闭其他</li> <li v-if="!isFirstView()" @click="closeLeftTags"><i class="el-icon-back"></i> 关闭左侧</li> <li v-if="!isLastView()" @click="closeRightTags"><i class="el-icon-right"></i> 关闭右侧</li> <li @click="closeAllTags(selectedTag)"><i class="el-icon-circle-close"></i> 全部关闭</li> </ul> </div> </template> <script> import ScrollPane from './ScrollPane' import path from 'path' export default { components: { ScrollPane }, data() { return { // 右键菜单隐藏对应布尔值 visible: false, //右键菜单对应位置 top: 0, left: 0, // 选择的标签 selectedTag: {}, // 固钉标签，不可删除 affixTags: [] } }, // 计算属性 computed: { visitedViews() { return this.$store.state.tagsView.visitedViews }, routes() { return this.$store.state.permission.routes }, }, // 监听 watch: { // 监听路由变化 $route() { this.addTags() this.moveToCurrentTag() }, //监听右键菜单的值是否为true，如果是就创建全局监听点击事件，触发closeMenu事件隐藏菜单，如果是false就删除监听 visible(value) { if (value) { document.body.addEventListener('click', this.closeMenu) } else { document.body.removeEventListener('click', this.closeMenu) } } }, // 页面渲染后初始化 mounted() { this.initTags() this.addTags() }, methods: { isActive(route) { return route.path === this.$route.path }, activeStyle(tag) { if (!this.isActive(tag)) return {}; return { "background-color": this.theme, "border-color": this.theme }; }, isAffix(tag) { return tag.meta && tag.meta.affix }, isFirstView() { try { return this.selectedTag.fullPath === this.visitedViews[1].fullPath || this.selectedTag.fullPath === '/index' } catch (err) { return false } }, isLastView() { try { return this.selectedTag.fullPath === this.visitedViews[this.visitedViews.length - 1].fullPath } catch (err) { return false } }, filterAffixTags(routes, basePath = '/') { let tags = [] routes.forEach(route => { if (route.meta && route.meta.affix) { const tagPath = path.resolve(basePath, route.path) tags.push({ fullPath: tagPath, path: tagPath, name: route.name, meta: { ...route.meta } }) } if (route.children) { const tempTags = this.filterAffixTags(route.children, route.path) if (tempTags.length >= 1) { tags = [...tags, ...tempTags] } } }) return tags }, initTags() { const affixTags = this.affixTags = this.filterAffixTags(this.routes) for (const tag of affixTags) { // Must have tag name if (tag.name) { this.$store.dispatch('tagsView/addVisitedView', tag) } } }, /* 添加页签 */ addTags() { const { name } = this.$route if (name) { this.$store.dispatch('tagsView/addView', this.$route) } return false }, /* 移动到当前页签 */ moveToCurrentTag() { const tags = this.$refs.tag this.$nextTick(() => { for (const tag of tags) { if (tag.to.path === this.$route.path) { this.$refs.scrollPane.moveToTarget(tag) // when query is different then update if (tag.to.fullPath !== this.$route.fullPath) { this.$store.dispatch('tagsView/updateVisitedView', this.$route) } break } } }) }, refreshSelectedTag(view) { this.$store.dispatch('tagsView/delCachedView', view).then(() => { const { fullPath } = view this.$nextTick(() => { this.$router.replace({ path: '/redirect' + fullPath }) }) }) }, closeSelectedTag(view) { this.$store.dispatch('tagsView/delView', view).then(({ visitedViews }) => { if (this.isActive(view)) { this.toLastView(visitedViews, view) } }) }, closeRightTags() { this.$store.dispatch('tagsView/delRightTags', this.selectedTag).then(visitedViews => { if (!visitedViews.find(i => i.fullPath === this.$route.fullPath)) { this.toLastView(visitedViews) } }) }, closeLeftTags() { this.$store.dispatch('tagsView/delLeftTags', this.selectedTag).then(visitedViews => { if (!visitedViews.find(i => i.fullPath === this.$route.fullPath)) { this.toLastView(visitedViews) } }) }, closeOthersTags() { this.$router.push(this.selectedTag) this.$store.dispatch('tagsView/delOthersViews', this.selectedTag).then(() => { this.moveToCurrentTag() }) }, closeAllTags(view) { this.$store.dispatch('tagsView/delAllViews').then(({ visitedViews }) => { if (this.affixTags.some(tag => tag.path === this.$route.path)) { return } this.toLastView(visitedViews, view) }) }, toLastView(visitedViews, view) { const latestView = visitedViews.slice(-1)[0] if (latestView) { this.$router.push(latestView.fullPath) } else { // now the default is to redirect to the home page if there is no tags-view, // you can adjust it according to your needs. if (view.name === 'Dashboard') { // to reload home page this.$router.replace({ path: '/redirect' + view.fullPath }) } else { this.$router.push('/') } } }, openMenu(tag, e) { const menuMinWidth = 105 const offsetLeft = this.$el.getBoundingClientRect().left // container margin left const offsetWidth = this.$el.offsetWidth // container width const maxLeft = offsetWidth - menuMinWidth // left boundary const left = e.clientX - offsetLeft + 15 // 15: margin right if (left > maxLeft) { this.left = maxLeft } else { this.left = left } this.top = e.clientY this.visible = true this.selectedTag = tag }, closeMenu() { this.visible = false }, handleScroll() { this.closeMenu() } } } </script> <style lang="scss" scoped> .tags-view-container { height: 34px; width: 100%; background: #fff; border-bottom: 1px solid #d8dce5; box-shadow: 0 1px 3px 0 rgba(0, 0, 0, .12), 0 0 3px 0 rgba(0, 0, 0, .04); .tags-view-wrapper { .tags-view-item { display: inline-block; position: relative; cursor: pointer; height: 26px; line-height: 26px; border: 1px solid #d8dce5; color: #495060; background: #fff; padding: 0 8px; font-size: 12px; margin-left: 5px; margin-top: 4px; &:first-of-type { margin-left: 15px; } &:last-of-type { margin-right: 15px; } &.active { background-color: #42b983; color: #fff; border-color: #42b983; &::before { content: ''; background: #fff; display: inline-block; width: 8px; height: 8px; border-radius: 50%; position: relative; margin-right: 2px; } } } } .contextmenu { margin: 0; background: #fff; z-index: 3000; position: absolute; list-style-type: none; padding: 5px 0; border-radius: 4px; font-size: 12px; font-weight: 400; color: #333; box-shadow: 2px 2px 3px 0 rgba(0, 0, 0, .3); li { margin: 0; padding: 7px 16px; cursor: pointer; &:hover { background: #eee; } } } } </style> <style lang="scss"> //reset element css of el-icon-close .tags-view-wrapper { .tags-view-item { .el-icon-close { width: 16px; height: 16px; vertical-align: 2px; border-radius: 50%; text-align: center; transition: all .3s cubic-bezier(.645, .045, .355, 1); transform-origin: 100% 50%; &:before { transform: scale(.6); display: inline-block; vertical-align: -3px; } &:hover { background-color: #b4bccc; color: #fff; } } } } </style>这个组件主要是控制路由标签长度超出时左右按钮的滚动功能。 在 TabsView 目录下，新建 ScrollPane.vue 文件，代码如下（示例）：
<template> <el-scrollbar ref="scrollContainer" :vertical="false" class="scroll-container" @wheel.native.prevent="handleScroll"> <slot /> </el-scrollbar> </template> <script> const tagAndTagSpacing = 4 // tagAndTagSpacing export default { name: 'ScrollPane', data() { return { left: 0 } }, computed: { scrollWrapper() { return this.$refs.scrollContainer.$refs.wrap } }, mounted() { this.scrollWrapper.addEventListener('scroll', this.emitScroll, true) }, beforeDestroy() { this.scrollWrapper.removeEventListener('scroll', this.emitScroll) }, methods: { handleScroll(e) { const eventDelta = e.wheelDelta || -e.deltaY * 40 const $scrollWrapper = this.scrollWrapper $scrollWrapper.scrollLeft = $scrollWrapper.scrollLeft + eventDelta / 4 }, emitScroll() { this.$emit('scroll') }, moveToTarget(currentTag) { const $container = this.$refs.scrollContainer.$el const $containerWidth = $container.offsetWidth const $scrollWrapper = this.scrollWrapper const tagList = this.$parent.$refs.tag let firstTag = null let lastTag = null // find first tag and last tag if (tagList.length > 0) { firstTag = tagList[0] lastTag = tagList[tagList.length - 1] } if (firstTag === currentTag) { $scrollWrapper.scrollLeft = 0 } else if (lastTag === currentTag) { $scrollWrapper.scrollLeft = $scrollWrapper.scrollWidth - $containerWidth } else { // find preTag and nextTag const currentIndex = tagList.findIndex(item => item === currentTag) const prevTag = tagList[currentIndex - 1] const nextTag = tagList[currentIndex + 1] // the tag's offsetLeft after of nextTag const afterNextTagOffsetLeft = nextTag.$el.offsetLeft + nextTag.$el.offsetWidth + tagAndTagSpacing // the tag's offsetLeft before of prevTag const beforePrevTagOffsetLeft = prevTag.$el.offsetLeft - tagAndTagSpacing if (afterNextTagOffsetLeft > $scrollWrapper.scrollLeft + $containerWidth) { $scrollWrapper.scrollLeft = afterNextTagOffsetLeft - $containerWidth } else if (beforePrevTagOffsetLeft < $scrollWrapper.scrollLeft) { $scrollWrapper.scrollLeft = beforePrevTagOffsetLeft } } } } } </script> <style lang="scss" scoped> .scroll-container { white-space: nowrap; position: relative; overflow: hidden; width: 100%; ::v-deep { .el-scrollbar__bar { bottom: 0px; } .el-scrollbar__wrap { height: 49px; } } } </style>修改 layout/components/index.js 文件，引入组件，代码如下（示例）：
export { default as TagsView } from './TagsView/index.vue'修改 layout/index.vue 文件，使用 tabsView 组件，代码如下（示例）：
<template> <div :class="classObj" class="app-wrapper"> <div v-if="device==='mobile'&&sidebar.opened" class="drawer-bg" @click="handleClickOutside" /> <!-- 左侧侧边栏菜单 --> <sidebar class="sidebar-container" /> <div class="main-container"> <div :class="{'fixed-header':fixedHeader}"> <navbar /> <!--多页签导航栏--> <tags-view v-if="needTagsView" /> </div> <app-main /> </div> </div> </template> <script> import { Navbar, Sidebar, AppMain, TagsView } from './components' import ResizeMixin from './mixin/ResizeHandler' export default { name: 'Layout', components: { Navbar, Sidebar, AppMain, TagsView }, mixins: [ResizeMixin], computed: { needTagsView() { return true }, ... }, methods: { handleClickOutside() { this.$store.dispatch('app/closeSideBar', { withoutAnimation: false }) } } } </script>修改 layout/components/AppMain.vue 文件，使用 keep-alive 组件，进行页签的缓存，代码如下（示例）：
<template> <section class="app-main"> <transition name="fade-transform" mode="out-in"> <keep-alive :include="cachedViews"> <router-view :key="key" /> </keep-alive> </transition> </section> </template> <script> export default { name: 'AppMain', computed: { cachedViews() { return this.$store.state.tagsView.cachedViews }, key() { return this.$route.path } } } </script> <style scoped> .app-main { /*50 = navbar */ min-height: calc(100vh - 50px); width: 100%; position: relative; overflow: hidden; } .fixed-header+.app-main { padding-top: 50px; } </style> <style lang="scss"> // fix css style bug in open el-dialog .el-popup-parent--hidden { .fixed-header { padding-right: 15px; } } </style>感谢各位的阅读，以上就是“vue怎么实现tagsview多页签导航功能”的内容了，经过本文的学习后，相信大家对vue怎么实现tagsview多页签导航功能这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是亿速云，小编将为大家推送更多相关知识点的文章，欢迎关注！
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