本文实例讲述了微信小程序自定义可滑动顶部TabBar选项卡实现页面切换功能。分享给大家供大家参考，具体如下：

顶部滚动选项卡

话不多说，直接上代码

pages/home/home.wxml

<scroll-view scroll-x="true" style='width: 100%; white-space:nowrap; '><!-- tab --><view class="tab"><view class="tab-nav" style='font-size:12px'><view wx:for="{{tabnav.tabitem}}" bindtap="setTab" data-tabindex="{{index}}" style="min-width:20%;max-width:20%;text-align:center;height: 80rpx;background: #fff;border-bottom:{{index>4?'1rpx solid #ddd;':''}}">{{item.text}}</view><view><view class="tab-line" style="width:{{100/tabnav.tabnum}}%;transform:translateX({{100*showtab}}%);"></view></view></view></view></scroll-view><swiper current="{{currentTab}}" class="swiper-box" duration="300" style="height:150rpx" bindchange="bindChange"><swiper-item><view>分类1</view></swiper-item><swiper-item><view>分类2</view></swiper-item><swiper-item><view>分类3</view></swiper-item><swiper-item><view>分类4</view></swiper-item><swiper-item><view>分类5</view></swiper-item><swiper-item><view>分类6</view></swiper-item></swiper>

pages/home/home.wxss

.tab {display: flex;flex-direction: column;}.tab-nav {border-bottom: 1rpx solid #ddd;width: 100%;height: 80rpx;display: flex;line-height: 79rpx;position: relative;}.tab-line {position: absolute;left: 0;bottom: -1rpx;height: 4rpx;background: #f7982a;transition: all 0.3s;}.tab-content {flex: 1;overflow-y: auto;overflow-x: hidden;}.swiper-tab {width: 100%;border-bottom: 2rpx solid #777;text-align: center;line-height: 80rpx;}.swiper-tab-list {font-size: 30rpx;display: inline-block;width: 33.33%;color: #777;}.on {color: #da7c0c;border-bottom: 1rpx solid #da7c0c;}.swiper-box {display: block;height: 100%;width: 100%;overflow: hidden;}.swiper-box view {text-align: center;}

pages/home/home.js

Page({data: {showtab: 0, //顶部选项卡索引tabnav: {tabnum: 5,tabitem: [{"id": 0,"text": "分类1"},{"id": 1,"text": "分类2"},{"id": 2,"text": "分类3"},{"id": 3,"text": "分类4"},{"id": 4,"text": "分类5"},{"id": 5,"text": "分类6"}]},productList: [],// tab切换currentTab: 0,},onLoad: function () {},setTab: function (e) {var that = thisthat.setData({showtab: e.currentTarget.dataset.tabindex})if (this.data.currentTab === e.currentTarget.dataset.tabindex) {return false;} else {that.setData({currentTab: e.currentTarget.dataset.tabindex})}},/*** 滑动切换tab*/bindChange: function (e) {var that = this;that.setData({ currentTab: e.detail.current,showtab: e.detail.current});}})

该代码实现基于两个大神的代码，(链接: https://www.jb51.net/article/161227.htm 和https://www.jb51.net/article/155522.htm)，在两位大神的基础上衍生出的可滚动的顶部选项卡，在此致谢。代码缺陷：当向右滑动到第6个页面的时候选项卡没有自动滑动。

希望本文所述对大家微信小程序开发有所帮助。