vue简单 tabbar封装

TabBar.vue

<template>
  <div id="tab-bar">
    <slot></slot>
  </div>
</template>
​
<script>
export default {};
</script>
​
<style>
#tab-bar {
  display: flex;
  text-align: center;
  height: 49px;
  background-color: #f2f2f2;
  box-shadow: 0 -1px 1px rgba(100, 100, 100, 0.2);
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding-top: 5px;
  box-sizing: border-box;
}
</style>

TabBarItem.vue

<template>
  <div class="tab-bar-item" @click="itemClick">
    <!-- 插槽设置属性,都要在插槽外面包装一层div然后给div设置属性，不能直接给插槽设置属性,会被插入时直接替换掉属性 -->
    <div v-if="!isActive">
      <slot name="item-icon"></slot>
    </div>
    <div v-else>
      <slot name="item-icon-active"></slot>
    </div>
    <div :style="activeStyle">
      <slot name="item-text"></slot>
    </div>
  </div>
</template>
​
<script>
export default {
  props: {
    link: String,
    activeColor: {
      type: String,
      default: "red"
    }
  },
  computed: {
    isActive() {
      // 如果当前活跃的路由的path和传来的path一致就返回true
      return this.$route.path.indexOf(this.link) !== -1;
    },
    // 可以动态绑定样式的计算属性
    activeStyle() {
      return this.isActive ? { color: this.activeColor } : {};
    }
  },
  methods: {
    itemClick() {
      this.$router.push(this.link);
    }
  }
};
</script>
​
<style>
.tab-bar-item {
  flex: 1;
  font-size: 14px;
}
.tab-bar-item img {
   24px;
  height: 24px;
  vertical-align: middle;
  margin-bottom: 2px;
}
</style>
​

App.vue

<template>
  <div id="app">
    <router-view />
    <tab-bar>
      <tab-bar-item link="/home" activeColor="red">
        <img src="./assets/img/tabbar/home.svg" slot="item-icon" alt />
        <img src="./assets/img/tabbar/home_active.svg" slot="item-icon-active" alt />
        <div slot="item-text">首页</div>
      </tab-bar-item>
      <tab-bar-item link="/category" activeColor="red">
        <img src="./assets/img/tabbar/category.svg" slot="item-icon" alt />
        <img src="./assets/img/tabbar/category_active.svg" slot="item-icon-active" alt />
        <div slot="item-text">分类</div>
      </tab-bar-item>
      <tab-bar-item link="/shopcart" activeColor="red">
        <img src="./assets/img/tabbar/shopcart.svg" slot="item-icon" alt />
        <img src="./assets/img/tabbar/shopcart_active.svg" slot="item-icon-active" alt />
        <div slot="item-text">购物车</div>
      </tab-bar-item>
      <tab-bar-item link="/profile" activeColor="red">
        <img src="./assets/img/tabbar/profile.svg" slot="item-icon" alt />
        <img src="./assets/img/tabbar/profile_active.svg" slot="item-icon-active" alt />
        <div slot="item-text">我的</div>
      </tab-bar-item>
    </tab-bar>
  </div>
</template>
​
<script>
import TabBar from "./components/tabbar/TabBar";
import TabBarItem from "./components/tabbar/TabBarItem";
export default {
  name: "App",
  components: {
    TabBar,
    TabBarItem
  }
};
</script>
​
<style>
@import url("./assets/css/base.css");
</style>

路由的index.js

import Vue from 'vue'
//1、 引入路由
import Router from 'vue-router'
//2、 使用路由
Vue.use(Router)
// 解决路由两次点击报错
const VueRouterPush = Router.prototype.push
Router.prototype.push = function push(to) {
  return VueRouterPush.call(this, to).catch(err => err)
}
// 懒加载路由
const Home = () => import("../views/home/Home.vue")
const Category = () => import("../views/category/Category.vue")
const Shopcart = () => import("../views/shopcart/Shopcart.vue")
const Profile = () => import("../views/profile/Profile.vue")
//5、 一般把路由定义相关的抽离出来
const routes = [
  { path: "/", redirect: "/home" },
  { path: "/home", component: Home },
  { path: "/category", component: Category },
  { path: "/shopcart", component: Shopcart },
  { path: "/profile", component: Profile }
]
//3、 创建路由对象
const router = new Router({
  routes,
  mode: "history"
})
//4、 导出路由
export default router

效果图