微信小程序重写tabbar底部导航，供大家参考，具体内容如下

1.app.js代码如下：

editTabBar: function() { var e = this.globalData.tabbar, a = getCurrentPages(), t = a[a.length - 1], s = t.__route__; 0 != s.indexOf("/") && (s = "/" + s); for (var n in e.list) e.list[n].selected = !1, e.list[n].pagePath == s && (e.list[n].selected = !0); t.setData({ tabbar: e }); }, tabBar: { color: "#123", selectedColor: "#1ba9ba", borderStyle: "#1ba9ba", backgroundColor: "#fff", list: [ { pagePath: "/we7/pages/index/index", iconPath: "/we7/resource/icon/home.png", selectedIconPath: "/we7/resource/icon/homeselect.png", text: "首页" }, { pagePath: "/we7/pages/user/index/index", iconPath: "/we7/resource/icon/user.png", selectedIconPath: "/we7/resource/icon/userselect.png", text: "我的" } ] }, globalData: { userInfo: null, tabbar: { color: "#333", selectedColor: "#d0501f", backgroundColor: "#ffffff", borderStyle: "#d5d5d5", list: [ { pagePath: "/pages/seller/gzt", text: "工作台", iconPath: "/pages/images/gzt@3x.png", selectedIconPath: "/pages/images/gztxz@3x.png", selected: !0 }, { pagePath: "/pages/seller/cp/cplb", text: "商品", iconPath: "/pages/images/dbdc.png", selectedIconPath: "/pages/images/dbdcxz.png", selected: !1 }, position: "bottom" } },

template.wxml

<template name="tabbar"> <view class="tabbar_box" style="background-color:{{tabbar.backgroundColor}}; border-top-color:{{tabbar.borderStyle}}; {{tabbar.position=='top'?'top:0':'bottom:0'}}"> <navigator class="tabbar_nav" openType="redirect" style="width:{{1/tabbar.list.length*100}}%; color:{{item.selected?tabbar.selectedColor:tabbar.color}}" url="{{item.pagePath}}" wx:for="{{tabbar.list}}" wx:key="index"> <image class="tabbar_icon" src="{{item.selected?item.selectedIconPath:item.iconPath}}"></image> <text>{{item.text}}</text> </navigator> </view></template>

3.template.wxss

.tabbar_box { display: -webkit-box; display: -ms-flexbox; display: flex; -webkit-box-orient: horizontal; -webkit-box-direction: normal; -ms-flex-direction: row; flex-direction: row; -ms-flex-pack: distribute; justify-content: space-around; position: fixed; bottom: 0; left: 0; z-index: 999; width: 100%; height: 100rpx; border-top: 0.5rpx solid #d5d5d5;}.tabbar_nav { display: -webkit-box; display: -ms-flexbox; display: flex; -webkit-box-orient: vertical; -webkit-box-direction: normal; -ms-flex-direction: column; flex-direction: column; -webkit-box-pack: center; -ms-flex-pack: center; justify-content: center; -webkit-box-align: center; -ms-flex-align: center; align-items: center; font-size: 25rpx; height: 100%;}.tabbar_icon { width: 40rpx; height: 40rpx;}

在需要用的页面(wxml)添加如下代码

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

在需要的样式（wxss）添加如下代码

@import "template.wxss";

在需要的js页面添加如下代码：

var dsq, app = getApp();添加在顶部
tabbar: {},在data中添加
app.editTabBar();在onLoad中添加

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。