vue+elementUI如何实现顶部路由标签跳转

<!-- TagsView/levelScroll.vue -->    
<template>
  <el-scrollbar
    ref="scrollContainer"
    :vertical="false"
    class="scroll-container"
    @wheel.native.prevent="handleScroll"
  >
    <slot />
  </el-scrollbar>
</template>

<script lang="ts">
import Vue from 'vue';

export default Vue.extend({
  data () {
    return {
      left: 0
    };
  },
  computed: {
    scrollWrapper () {
      return (this.$refs as any).scrollContainer.$refs.wrap;
    }
  },
  methods: {
    // 鼠标滑动事件
    handleScroll (e: { wheelDelta: number; deltaY: number }) {
      const eventDelta = e.wheelDelta || -e.deltaY * 40;
      const $scrollWrapper = this.scrollWrapper;
      $scrollWrapper.scrollLeft = $scrollWrapper.scrollLeft + eventDelta / 4;
    }
  }
});
</script>

<style lang="less" scoped>
.scroll-container {
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  width: 100%;
  /deep/.el-scrollbar__bar {
    bottom: 0px;
  }
  /deep/.el-scrollbar__wrap {
    height: 49px;
    // margin-bottom: -17px !important;
    // margin-right: -17px !important;
  }
}
</style>

// modules/tagsView.ts
const state = {
  // 访问过的页面标签
  visitedViews: [
    {
      path: '/dashboard/index',
      meta: { title: '首页', affix: true }
    }
  ],
  // 访问过的页面的 name 值
  cachedViews: []
};

const mutations = {
  // 添加访问过的路由
  ADD_VISITED_VIEW: (state: { visitedViews: any[] }, view: any) => {
    if (state.visitedViews.some((v) => v.path === view.path)) return;
    state.visitedViews.push(
      Object.assign({}, view, {
        title: view.meta.title
      })
    );
  },
  // 添加访问过的路由 name
  ADD_CACHED_VIEW: (state: { cachedViews: any[] }, view: { name: string }) => {
    if (state.cachedViews.includes(view.name)) return;
    state.cachedViews.push(view.name);
  },

  // 删除当前路由
  DEL_VISITED_VIEW: (
    state: { visitedViews: any[] },
    view: { path: string }
  ) => {
    for (const [i, v] of state.visitedViews.entries()) {
      if (v.path === view.path) {
        state.visitedViews.splice(i, 1);
        break;
      }
    }
  },
  // 删除当前路由 name
  DEL_CACHED_VIEW: (state: { cachedViews: any[] }, view: { name: string }) => {
    const index = state.cachedViews.indexOf(view.name);
    index > -1 && state.cachedViews.splice(index, 1);
  },

  // 删除当前路由之外的路由
  DEL_OTHERS_VISITED_VIEWS: (
    state: { visitedViews: any[] },
    view: { path: string }
  ) => {
    state.visitedViews = state.visitedViews.filter((v) => {
      return v.meta.affix || v.path === view.path;
    });
  },
  // 删除当前路由之外的路由 name
  DEL_OTHERS_CACHED_VIEWS: (
    state: { cachedViews: any[] },
    view: { name: string }
  ) => {
    const index = state.cachedViews.indexOf(view.name);
    if (index > -1) {
      state.cachedViews = state.cachedViews.slice(index, index + 1);
    } else {
      state.cachedViews = [];
    }
  },

  // 删除全部访问过的路由
  DEL_ALL_VISITED_VIEWS: (state: { visitedViews: any[] }) => {
    const affixTags = state.visitedViews.filter((tag) => tag.meta.affix);
    state.visitedViews = affixTags;
  },
  // 删除全部访问过的路由 name
  DEL_ALL_CACHED_VIEWS: (state: { cachedViews: any[] }) => {
    state.cachedViews = [];
  }
};

const actions = {
  // 添加访问过的路由
  addVisitedView ({ commit }: { commit: any }, view: any) {
    commit('ADD_VISITED_VIEW', view);
  },
  // 添加访问过的路由 name
  addCachedView ({ commit }: { commit: any }, view: any) {
    commit('ADD_CACHED_VIEW', view);
  },
  addView ({ dispatch }: { dispatch: any }, view: any) {
    dispatch('addVisitedView', view);
    dispatch('addCachedView', view);
  },

  // 删除当前路由
  delVisitedView ({ commit }: { commit: any }, view: any) {
    commit('DEL_VISITED_VIEW', view);
  },
  // 删除当前路由 name
  delCachedView ({ commit }: { commit: any }, view: any) {
    commit('DEL_CACHED_VIEW', view);
  },
  delView ({ dispatch }: { dispatch: any }, view: any) {
    dispatch('delVisitedView', view);
    dispatch('delCachedView', view);
  },

  // 删除当前路由之外的路由
  delOthersVisitedViews ({ commit }: { commit: any }, view: any) {
    commit('DEL_OTHERS_VISITED_VIEWS', view);
  },
  // 删除当前路由之外的路由 namw
  delOthersCachedViews ({ commit }: { commit: any }, view: any) {
    commit('DEL_OTHERS_CACHED_VIEWS', view);
  },
  delOthersViews ({ dispatch }: { dispatch: any }, view: any) {
    dispatch('delOthersVisitedViews', view);
    dispatch('delOthersCachedViews', view);
  },

  // 删除全部访问过的路由
  delAllVisitedViews ({ commit }: { commit: any }) {
    commit('DEL_ALL_VISITED_VIEWS');
  },
  // 删除全部访问过的路由 name
  delAllCachedViews ({ commit }: { commit: any }) {
    commit('DEL_ALL_CACHED_VIEWS');
  },
  delAllViews ({ dispatch }: { dispatch: any }, view: any) {
    dispatch('delAllVisitedViews', view);
    dispatch('delAllCachedViews', view);
  }
};

export default {
  namespaced: true,
  state,
  mutations,
  actions
};

// getters.ts
const getters = {
  // 访问的页面标签
  visitedViews: (state: any) => state.tagsView.visitedViews,
  // 访问的页面标签 name
  cachedViews: (state: any) => state.tagsView.cachedViews
};
export default getters;

import Vue from 'vue';
import VueRouter from 'vue-router';
import Login from '@/views/login/index.vue';
import Layout from '@/layout/index.vue';

Vue.use(VueRouter);

/**
 * hidden 表示是否需要在侧边导航栏出现 ，true表示不需要
 * isFirst 表示是否只有一级权限，只出现在只有一个子集，没有其他孙子集
 * 当权限拥有多个子集或者孙子集，一级权限需要加上 meta
 * 二级权限拥有子集，也必须有 meta
 */

// 基础路由
export const constantRoutes = [
  {
    path: '/redirect',
    component: Layout,
    hidden: true,
    children: [
      {
        path: '/redirect/:path(.*)',
        component: () => import('@/views/redirect/index.vue')
      }
    ]
  },
  {
    path: '/',
    redirect: '/dashboard',
    hidden: true
  },
  {
    path: '/login',
    name: 'Login',
    component: Login,
    hidden: true
  },
  {
    path: '/dashboard',
    component: Layout,
    redirect: '/dashboard/index',
    isFirst: true,
    children: [
      {
        path: 'index',
        name: 'Dashboard',
        component: () => import('@/views/dashboard/index.vue'),
        meta: {
          title: '首页',
          icon: 'el-icon-location'
        }
      }
    ]
  }
];

// 动态路由
export const asyncRoutes = [
  {
    path: '/form',
    component: Layout,
    redirect: '/form/index',
    isFirst: true,
    children: [
      {
        path: 'index',
        name: 'Form',
        component: () => import('@/views/form/index.vue'),
        meta: {
          title: '表单',
          role: 'form',
          icon: 'el-icon-location'
        }
      }
    ]
  },
  {
    path: '/editor',
    component: Layout,
    redirect: '/editor/index',
    meta: {
      role: 'editors',
      title: '总富文本',
      icon: 'el-icon-location'
    },
    children: [
      {
        path: 'index',
        name: 'Editor',
        component: () => import('@/views/editor/index.vue'),
        meta: {
          title: '富文本',
          role: 'editor',
          icon: 'el-icon-location'
        }
      },
      {
        path: 'two',
        name: 'Two',
        redirect: '/editor/two/three',
        component: () => import('@/views/editor/two.vue'),
        meta: {
          title: '二级导航',
          role: 'two',
          icon: 'el-icon-location'
        },
        children: [
          {
            path: 'three',
            name: 'Three',
            component: () => import('@/views/editor/three.vue'),
            meta: {
              title: '三级导航',
              role: 'three',
              icon: 'el-icon-location'
            }
          },
          {
            path: 'four',
            name: 'Four',
            component: () => import('@/views/editor/four.vue'),
            meta: {
              title: '三级导航2',
              role: 'four',
              icon: 'el-icon-location'
            }
          }
        ]
      }
    ]
  },
  {
    path: '/tree',
    component: Layout,
    redirect: '/tree/index',
    isFirst: true,
    children: [
      {
        path: 'index',
        name: 'Tree',
        component: () => import('@/views/tree/index.vue'),
        meta: {
          title: '树状图',
          role: 'tree',
          icon: 'el-icon-location'
        }
      }
    ]
  },
  {
    path: '/excel',
    component: Layout,
    redirect: '/excel/index',
    isFirst: true,
    children: [
      {
        path: 'index',
        name: 'Excel',
        component: () => import('@/views/excel/index.vue'),
        meta: {
          title: '导入导出',
          role: 'excel',
          icon: 'el-icon-location'
        }
      }
    ]
  }
];

// 出错跳转的路由
export const error = [
  // 404
  {
    path: '/404',
    component: () => import('@/views/error/index.vue'),
    hidden: true
  },
  {
    path: '*',
    redirect: '/404',
    hidden: true
  }
];

const createRouter = () =>
  new VueRouter({
    scrollBehavior: () => ({
      x: 0,
      y: 0
    }),
    routes: constantRoutes
  });

const router = createRouter();

// 刷新路由
export function resetRouter () {
  const newRouter = createRouter();
  (router as any).matcher = (newRouter as any).matcher;
}

export default router;

<!-- 一般在主体布局页面使用 -->
<template>
  <div class="layout">
     ......
    <el-container :class="{ hideSidebar: isCollapse }">
      ......
      <!-- 主体内容 -->
      <el-main>
        <!-- 访问过的路由标签 -->
        <tags-view></tags-view>
        <keep-alive :include="cachedViews">
          <router-view :key="$route.path" />
        </keep-alive>
      </el-main>
    </el-container>
  </div>
</template>

<script lang="ts">
import Vue from 'vue';
import { mapGetters } from 'vuex';
import SubMenu from '@/components/SubMenu/index.vue';
import MyBreadcrumb from '@/components/Breadcrumb/index.vue';
import TagsView from '@/components/TagsView/index.vue';
import { resetRouter } from '@/router';

export default Vue.extend({
  computed: {
    // 路由
    ...mapGetters(['cachedViews'])
  },
  components: {
    TagsView
  }
});
</script>