vue自定义底部导航栏Tabbar的实现代码

<template>
 <div class="itemWarp flex_mid" @click='changePage'>
 <span v-show='!bol'>
  <slot name='normalImg'></slot>
 </span>
 <span v-show='bol'>
  <slot name='activeImg'></slot>
 </span>
 <span v-text='txt'></span>
 </div>
</template>
<script type="text/javascript">
 export default{
 name: 'Item',
 props:{
  txt:{
  type:String
  },
  page:{
  type:String
  },
  sel:{
  type:String
  }
 },
 puted:{
  bol: function(){
  if(this.sel == this.page){
   return true;
  }
  return false;
  }
 },
 methods:{
  changePage:function(){
  //点击跳转对应的页面
  this.$router.push('/'+this.page);
  this.$emit('change',this.page)
  }
 }
 }
</script>
<style type="text/css">
 .itemWarp{
 flex-grow: 1;
 display: flex;
 align-items: center;
 justify-content: center;
 flex-direction: column;
 }
 .itemWarp span{
 font-size: 12px;
 }
</style>

<template>
 <div class="tabberWarp" >
 <div class="warp">
  <Item :txt='item.txt' :page='item.page' @change='getVal' v-for='item in tabbarDes':sel='selected'>
  <img :src="item.normalImg" slot='normalImg'>
  <img :src="item.activeImg" slot='activeImg'>
  </Item>
 </div>
 </div>
</template>
<script type="text/javascript">
 import Item from './Item.vue'
 export default{
 ponents:{
  Item
 },
 data:function(){
  return{
  selected:'skin',
  tabbarDes:[
   {
   txt:'表情',
   page:'skin',
   normalImg:require('../assets/images/zz_07.jpg'),
   activeImg:require('../assets/images/22_03.jpg')
   
   },  
   {
   txt:'皮肤',
   page:'phiz',
   normalImg:require('../assets/images/download_skin_ic.png'),
   activeImg:require('../assets/images/112_26.jpg')
   },
   {
   txt:'词库',
   page:'thesaurus',
   normalImg:require('../assets/images/zz_09.jpg'),
   activeImg:require('../assets/images/icon2_03.jpg')
   },
   {
   txt:'账号',
   page:'aount',
   normalImg:require('../assets/images/zz_11.jpg'),
   activeImg:require('../assets/images/cion_03.jpg')
   },
   {
   txt:'设置',
   page:'setup',
   normalImg:require('../assets/images/zz_13.jpg'),
   activeImg:require('../assets/images/22_03.jpg')
   }
  ]
  }
 },
 methods:{
  getVal:function(res){
  this.selected = res;
  }
 }
 }
</script>
<style type="text/css">
 .warp{
 width: 100%;
 border-: 1px solid #eee;
 background: #fff;
 display: flex;
 align-items: center;
 justify-content: space-around;
 font-size: 0;
 }
 .warp img{
 width: 20px;
 height: 20px;
 }
 .tabberWarp img{
 margin-: 10px;
 margin-bottom: 5px;
 }
 .tabberWarp{
 position: fixed;
 bottom: 0;
 left: 0;
 width: 100%;
 padding-bottom: 5px;
 background: #fff;
 }
</style>

<template>
 <div id="app">
  <router-view></router-view>
  <Tabbar></Tabbar>
  <div class="empty"></div>
 </div>
</template>
<script>
import Tabbar from'./ponents/tabbar'
export default {
 name: 'app',
 created:function(){
  this.$router.push('/')
 },
 ponents:{
  Tabbar
 }
}
</script>