elementui tab标签管理路由页面

时间:2024-04-05 16:02:26

样式

elementui tab标签管理路由页面

准备

  • 搭建好的vue脚手架(elementui,router,vuex)
  • elementui(NavMenu 导航菜单,Tabs 标签页)

思路

  • 将打开的所有路由放到一个栈里(openTab:[]),tabs显示遍历openTab

  • 初始状态,将首页推入栈,并设置**状态

  • 当切换路由时(监听路由变化),判断栈里是否存在这个路由,
    若存在,只改变**状态;若不存在,则推入栈,并改变**状态。

  • tabs 切换,调用@tab-click='tabClick’方法,跳转路由,(路由变化,走上一步中“若存在,只改变**状态”)

  • tabs 移除,调用@tab-remove=‘tabRemove’ 方法,移除栈(openTab)中对应的路由,若移除的路由是**状态,那么跳转路由到栈中最后一个(路由变化);若移除的路由非**状态,不做修改
    涉及到的内容

vuex state:路由栈、**状态 mutations: 添加、移除、修改**状态
watch
mounted
tab 切换、移除两个方法

搭建

搭建页面框架

slider组件

<template>
      <el-menu
        :default-active="$route.path"
        class="slider"
        background-color="#545c64"
        text-color="#fff"
        active-text-color="#ffd04b"
        router
        >
        <el-menu-item index="/main" >
          <i class="el-icon-menu"></i>
          <span slot="title">首页</span>
        </el-menu-item>
        
        <el-submenu v-for="(item,index) in menuList" :key="index" :index='item.id'>
          <template slot="title">
            <i :class="item.icon"></i>
            <span>{{item.title}}</span>
          </template>
          <el-menu-item-group >
            <el-menu-item v-for="child in item.children" :key="child.id" :index='child.index'>{{child.childtitle}}</el-menu-item>
          </el-menu-item-group>
        </el-submenu>
      </el-menu>
</template>

<script>
export default {
  name: 'Slider',
  data(){
    return {
      menuList:[
        {
          id:'1',
          title: '导航1',
          icon:'el-icon-location',
          children:[
            {
              index:'/page1',
              childtitle:'导航1page1'
            },
            {
              index:'/page2',
              childtitle:'导航1page2'
            },
          ]
        },
        {
          id:'2',
          title: '导航2',
          icon:'el-icon-location',
          children:[
            {
              index:'/page3',
              childtitle:'导航2page3'
            },
            {
              index:'/page4',
              childtitle:'导航2page4'
            },
          ]
        }
      ]
    }
  },
  
}
</script>
<style scoped>
.slider{
  height: 100vh;
}
</style>

home页

<template>
  <div class="home">
    <el-row>
      <el-col :span="4">
        <!-- 左侧导航栏 -->
        <slider></slider>
      </el-col>
      <el-col :span='20'>
        <!-- header -->
        <nav-top></nav-top>
        <!-- 内容区 -->
        <div class="app-wrap">
          </router-view>
        </div>
      </el-col>
    </el-row>
  </div>
</template>

通过路由配置,使页面可以正常的跳转

准备状态管理

state: {
    openTab:[],//所有打开的路由
    activeIndex:'/main' //**状态
  },
  mutations: {
    // 添加tabs
    add_tabs (state, data) {
      this.state.openTab.push(data);
    },
    // 删除tabs
    delete_tabs (state, route) {
      let index = 0;
      for (let option of state.openTab) {
        if (option.route === route) {
          break;
        }
        index++;
      }
      this.state.openTab.splice(index, 1);
    },
    // 设置当前**的tab
    set_active_index (state, index) {
      this.state.activeIndex = index;
    },
  },

在home页 ,或者silder页 , 初始的路由状态

mounted () {
    // 刷新时以当前路由做为tab加入tabs
    // 当前路由不是首页时,添加首页以及另一页到store里,并设置**状态
    // 当当前路由是首页时,添加首页到store,并设置**状态
   if (this.$route.path !== '/' && this.$route.path !== '/main') {
      console.log('1');
      this.$store.commit('add_tabs', {route: '/main' , name: 'main'});
      this.$store.commit('add_tabs', {route: this.$route.path , name: this.$route.name });
      this.$store.commit('set_active_index', this.$route.path);
    } else {
      console.log('2');
      this.$store.commit('add_tabs', {route: '/main', name: 'main'});
      this.$store.commit('set_active_index', '/main');
      this.$router.push('/');
    }
  },

监听路由变化

 watch:{
    '$route'(to,from){
        //判断路由是否已经打开
        //已经打开的 ,将其置为active
        //未打开的,将其放入队列里
        let flag = false;
        for(let item of this.openTab){
          console.log("item.name",item.name)
          console.log("t0.name",to.name)

          if(item.name === to.name){
            console.log('to.path',to.path);
            this.$store.commit('set_active_index',to.path)
            flag = true;
            break;
          }
        }

        if(!flag){
          console.log('to.path',to.path);
          this.$store.commit('add_tabs', {route: to.path, name: to.name});
          this.$store.commit('set_active_index', to.path);
        }

    }
  }

tab方法

//tab标签点击时,切换相应的路由
    tabClick(tab){
      console.log("tab",tab);
      console.log('active',this.activeIndex);
      this.$router.push({path: this.activeIndex});
    },
    //移除tab标签
    tabRemove(targetName){
      console.log("tabRemove",targetName);
      //首页不删
      if(targetName == '/'){
        return
      }
      this.$store.commit('delete_tabs', targetName);
      if (this.activeIndex === targetName) {
        // 设置当前**的路由
        if (this.openTab && this.openTab.length >= 1) {
          console.log('=============',this.openTab[this.openTab.length-1].route)
          this.$store.commit('set_active_index', this.openTab[this.openTab.length-1].route);
          this.$router.push({path: this.activeIndex});
        } else {
          this.$router.push({path: '/'});
        }
      }
    }

GitHub代码地址
在线演示地址