微信小程序实现滴滴导航tab切换效果

 <view class="contain">
 <!-- 导航栏 -->
 <scroll-view class="tab" scroll-x scroll-left="{{tabScroll}}" scroll-with-animation="true">
 <block wx:for="{{menuList}}" wx:key="index">
 <view class="tab-item {{currentTab == index ? 'active' : ''}}" data-current="{{index}}" bindtap='clickMenu'>{{item.name}}</view>
 </block>
 </scroll-view>
 <!-- 页面 -->
 <swiper class="content" style='height: {{height}}px' duration="1000" current="{{currentTab}}" bindchange="changeContent">
 <swiper-item class="content-item" wx:for="{{menuList}}" wx:key="index">这里是{{item.name}}</swiper-item>
 </swiper>
</view>

Page({
 data: {
 menuList: [{
 name: "快车"
 }, {
 name: "顺风车"
 }, {
 name: "外卖"
 }, {
 name: "单车"
 }, {
 name: "礼橙专车"
 }, {
 name: "出租车"
 }, {
 name: "公交"
 }, {
 name: "代驾"
 }, {
 name: "豪华车"
 }, {
 name: "自驾租车"
 }, {
 name: "拼车"
 }, {
 name: "二手车"
 }],
 tabScroll: 0,
 currentTab: 0,
 windowHeight: '',
 windowWidth: ''
 },
 onLoad: function() { 
 wx.getSystemInfo({ // 获取当前设备的宽高，文档有
 success: (res) => { 
 this.setData({
 windowHeight: res.windowHeight,
 windowWidth: res.windowWidth
 })
 },
 })
 },
 onReady: function() {
 wx.setNavigationBarTitle({ //修改标题文字
 title: ''
 })
 },
 clickMenu: function(e) {
 var current = e.currentTarget.dataset.current //获取当前tab的index
 var tabWidth = this.data.windowWidth / 5 // 导航tab共5个，获取一个的宽度
 this.setData({
 tabScroll: (current - 2) * tabWidth //使点击的tab始终在居中位置
 }) 
 if (this.data.currentTab == current) {
 return false
 } else {
 this.setData({currentTab: current })
 }
 },
 changeContent: function(e) {
 var current = e.detail.current // 获取当前内容所在index,文档有
 var tabWidth = this.data.windowWidth / 5 
 this.setData({
 currentTab: current,
 tabScroll: (current - 2) * tabWidth
 })
 }
})

.contain{
 width: 100%;
 height: 100%;
}
.tab{
 width: 100%;
 height: 100rpx;
 position: fixed;
 top: 0;
 left: 0;
 z-index: 100;
 white-space: nowrap;
 box-sizing: border-box;
 overflow: hidden;
 line-height: 100rpx;
 
}
.tab-item{
 display: inline-block;
 width: 20%;
 text-align: center;
 font-size: 14px;
 color: #8f9193;
}
.active{
 color: #ff502c
}
.content{
 padding-top: 100rpx;
 box-sizing: border-box;
 text-align: center;
 font-size: 14px;
}
.content-item{
 overflow-y: scroll
}