view仿拼多多横向滑动滚动条

实现代码

index.wxml

<scroll-view scroll-x="true" scroll-with-animation="true" wx:if="{{tlist[currentTab].secondList}}" scroll-left='0' bindscroll="getleft"> <!--内容区域--> <view> <view wx:for="{{tlist[currentTab].secondList}}" wx:for-item="childItem" bindtap="getProductList" data-id="{{childItem.id}}"> <image src="https://www.jb51.net/{{childItem.icon}}"></image> <text>{{childItem.name}}</text> </view> </view> <view wx:if="{{tlist[currentTab].thirdList}}"> <view wx:for="{{tlist[currentTab].thirdList}}" wx:for-item="childItem" data-id="{{childItem.id}}" bindtap="getProductList"> <image src="https://www.jb51.net/{{childItem.icon}}" ></image> <text>{{childItem.name}}</text> </view> </view> </scroll-view > <!--滚动条部分--> <view wx:if="{{slideShow}}"> <view > <view></view> </view> </view>

index.js

//获取应用实例 var app = getApp(); Page({ data: { navigate_type:'',//分类类型，是否包含二级分类 slideWidth:'',//滑块宽 slideLeft:0 ,//滑块位置 totalLength:'',//当前滚动列表总长 slideShow:false, slideRatio:'' }, onLoad: function () { var self = this ; var systemInfo = wx.getSystemInfoSync() ; self.setData({ list: _list, windowHeight: app.globalData.navigate_type == 1 ? systemInfo.windowHeight : systemInfo.windowHeight - 35, windowWidth: systemInfo.windowWidth, navigate_type: app.globalData.navigate_type }) //计算比例 self.getRatio(); }, //根据分类获取比例 getRatio(){ var self = this ; if (!self.data.tlist[self.data.currentTab].secondList || self.data.tlist[self.data.currentTab].secondList.length<=5){ this.setData({ slideShow:false }) }else{ var _totalLength = self.data.tlist[self.data.currentTab].secondList.length * 150; //分类列表总长度 var _ratio = 230 / _totalLength * (750 / this.data.windowWidth); //滚动列表长度与滑条长度比例 var _showLength = 750 / _totalLength * 230; //当前显示红色滑条的长度(保留两位小数) this.setData({ slideWidth: _showLength, totalLength: _totalLength, slideShow: true, slideRatio:_ratio }) } } , //slideLeft动态变化 getleft(e){ this.setData({ slideLeft: e.detail.scrollLeft * this.data.slideRatio }) } })

index.wxss

.scroll-view-x{ background-color: #fff; white-space: nowrap; } .navigator_second{ width:150rpx; text-align:center; display:inline-block; height:115rpx; } .navigator_icon{ width:60rpx; height:60rpx; } .navigator_text{ display:block; width:100%; font-size:24rpx } .slide{ height:30rpx; background:#fff; with:100%; padding:14rpx 0 5rpx 0 } .slide .slide-bar{ width:230rpx; margin:0 auto; height:1.5px; background:#eee; } .slide .slide-bar .slide-show{ height:100%; background-color:#ff6969; }

项目地址：微信小程序横向滑动滚动条