样式
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: '/'});
}
}
}