本文实例为大家分享了微信小程序自定义tabBar组件的具体代码，供大家参考，具体内容如下

以下代码保存在github地址

先看一看目录

template文件夹里存放tabbar模板。

template/template.wxml

<template name="tabBar"><view class="tabBar"> <block wx:for="{{tabBar}}" wx:for-item="item" wx:key="tabBar"> <view class="tabBar-item"> <navigator open-type="redirect" url="{{item.pagePath}}"> <view><image class="icon" src='{{item.iconPath}}'></image></view> <view class="{{item.current== 1 ? 'tabBartext' :''}}">{{item.text}}</view> </navigator> </view> </block></view></template>

template.css

.icon{ width:54rpx; height: 54rpx;}.tabBar{ width:100%; position: fixed; bottom:0; padding:10rpx; margin-left:-4rpx; background:#F7F7FA; font-size:20rpx; color:#8A8A8A; box-shadow: 6rpx 6rpx 6rpx 6rpx #aaa;} .tabBar-item{ float:left; width:25%; text-align: center; overflow: hidden;}.tabBartext{ color:red;}

template.js

//初始化数据function tabbarinit() { return [ { "current":0, "pagePath": "/pages/index/index", "iconPath": "/imgs/home.png", "selectedIconPath": "/imgs/home_on.png", "text": "主页" }, { "current": 0, "pagePath": "/pages/news/news", "iconPath": "/imgs/message.png", "selectedIconPath": "/imgs/message_on.png", "text": "资讯" }, { "current": 0, "pagePath": "/pages/category/category", "iconPath": "/imgs/category.png", "selectedIconPath": "/imgs/category_on.png", "text": "分类" }, { "current": 0, "pagePath": "/pages/buy/buy", "iconPath": "/imgs/buy.png", "selectedIconPath": "/imgs/buy_on.png", "text": "购物" } ]}//tabbar 主入口function tabbarmain(bindName = "tabdata", id, target) { var that = target; var bindData = {}; var otabbar = tabbarinit(); otabbar[id]['iconPath'] = otabbar[id]['selectedIconPath']//换当前的icon otabbar[id]['current'] = 1; bindData[bindName] = otabbar that.setData({ bindData });}module.exports = { tabbar: tabbarmain}

到此改组件完成，然后讲解一下使用方法。
我们先把样式载入到app.wxss

@import "/template/template.wxss";

在index文件夹

index.wxml

<import src="../../template/template.wxml"/><template is="tabBar" data="{{tabBar:bindData.tabBar}}"/>

index.js

const app = getApp()var template = require('../../template/template.js');Page({ data: { }, onLoad: function () { template.tabbar("tabBar", 0, this)//0表示第一个tabbar },})

news.wxml与index.wxml一样
news.js如下

const app = getApp()var template = require('../../template/template.js');Page({ data: { }, onLoad: function () { template.tabbar("tabBar", 1, this)//1表示第二个tabbar },})

效果如图

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。