微信小程序实现商品数据联动效果
微信小程序实现商品数据联动
直接复制代码更改可以看出效果,然后根据自己想要进行调整
注: 以下商品图片用于测试,如有侵权请通知,会删除相关图片。
js部分:
// pages/demo1/demo1.js //存放右侧分类的高度累加数组 var heightList = []; //记录scroll-view滚动过程中距离顶部的高度 var distanceToTop = 0; Page({ /** * 页面的初始数据 */ data: { curActive: 0, //当前选中项 productList: [{ c_name: '新鲜水果', list: [{ id: 0, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '樱桃' }, { id: 1, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '荔枝' }, { id: 2, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '荔枝' }, { id: 3, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '荔枝' }, { id: 4, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '荔枝' }, { id: 5, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '荔枝' }, { id: 6, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '荔枝' }, { id: 7, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '荔枝' }, ] }, { c_name: '海鲜水产', list: [{ id: 0, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 1, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 2, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 3, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 4, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 5, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 6, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 7, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 8, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, ] }, { c_name: '测试数据1', list: [{ id: 0, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 1, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 2, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 3, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 4, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 5, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 6, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 7, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 8, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, ] }, { c_name: '测试数据2', list: [{ id: 0, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 1, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 2, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 3, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 4, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 5, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 6, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 7, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, { id: 8, img: 'https://img.alicdn.com/imgextra/i4/615340156/O1CN0117eRFg1D1UYcEhmXj_!!0-saturn_solar.jpg_468x468q75.jpg_.webp', goodsName: '鲍鱼' }, ] } ] }, /** * 左侧: 菜单事件 * @param {*} e */ selectMenu(e) { let index = e.currentTarget.dataset.index; this.setData({ curActive: index, toView: "nav" + index }) }, /** * 获取商品列表高度 * 计算右侧商品某分类的高度 */ getProListHeight() { let tmpHeightList = []; let tmpH = 0; //临时存放每个分类的高度 // 获取元素信息 返回一个 SelectorQuery 对象实例 const query = wx.createSelectorQuery() query.selectAll('.product').boundingClientRect() query.exec(function (res) { res[0].forEach((item) => { tmpH += item.height; // Math.floor()向下取整 【根据个人需要修改】 tmpHeightList.push(Math.floor(tmpH)); }) heightList = tmpHeightList; console.log(heightList); }) }, /** * 监听滚动时触发事件 * @param {*} e */ scroll(e) { if (heightList.length == 0) return; let scrollTop = e.detail.scrollTop; //滚动位置 let current = this.data.curActive; console.log('scrollTop======>', scrollTop); if (scrollTop > distanceToTop) { //如果右侧 可视区域的竖直滚动位置 超过 当前列表选中项距顶部的高度(且没有下标越界),则更新左侧选中项 if ((current + 1 < heightList.length) && (scrollTop >= heightList[current])) { this.setData({ curActive: current + 1 }) } } else { //如果右侧 可视区域的竖直滚动位置 小于 当前列表选中的项距顶部的高度,则更新左侧选中项 if ((current - 1 >= 0) && (scrollTop < heightList[current - 1])) { this.setData({ curActive: current - 1 }) } } //更新顶部的距离 distanceToTop = scrollTop; }, /** * 生命周期函数--监听页面加载 */ onLoad: function (options) { // 获取商品列表高度 this.getProListHeight(); }, /** * 生命周期函数--监听页面初次渲染完成 */ onReady: function () { }, /** * 生命周期函数--监听页面显示 */ onShow: function () { }, /** * 生命周期函数--监听页面隐藏 */ onHide: function () {}, /** * 生命周期函数--监听页面卸载 */ onUnload: function () { }, /** * 页面相关事件处理函数--监听用户下拉动作 */ onPullDownRefresh: function () { console.log('触发下拉') }, /** * 页面上拉触底事件的处理函数 */ onReachBottom: function () { console.log('触发上拉触底') }, /** * 用户点击右上角分享 */ onShareAppMessage: function () {} })
然后是wxml部分:
<view class="title">商品数据联动</view> <view class="box"> <view class="left"> <scroll-view scroll-y="true" scroll-with-animation="true" class="container"> <view class="menu-item {{index == curActive ? 'active' : ''}}" wx:for="{{productList}}" data-index="{{index}}" wx:key="index" bindtap="selectMenu"> {{item.c_name}} </view> </scroll-view> </view> <view class="right"> <scroll-view scroll-y="true" scroll-with-animation="true" bindscroll="scroll" scroll-into-view="{{toView}}" style="height: 100%"> <block wx:for="{{productList}}" wx:key="*this"> <!-- id:实现点击左侧某分类时,右侧滚动至相应位置(注意:id不能以数字开头)--> <view id="nav{{index}}" class="product"> <view class="c_name">{{item.c_name}}</view> <view class="goods-box"> <view class="goods-item" wx:for="{{item.list}}" wx:for-item='items' wx:key="index"> <image class="goods-img" src="{{items.img}}" mode="aspectFit"></image> <view class="goods-name">{{items.goodsName}}</view> </view> </view> </view> </block> <view class="bottom">到底了~没有更多了</view> </scroll-view> </view> </view>
然后是css部分:
.title { text-align: center; margin-top: 30px; } .box{ width: 100%; height: 400px; display: flex; } .left { width: 80px; display: inline-block; } .right{ flex: 1; background: #ccc; } .container { width: 100%; height: 400px; background-color: gray; padding: 0; } .menu-item { width: 100%; height: 50px; border-bottom: 1px solid #000; background-color: pink; line-height: 50px; text-align: center; } .active { background-color: red; } .c_name{ width: 100%; text-align: center; padding-top: 20px; } .goods-box { display: flex; justify-content: flex-start; flex-wrap: wrap; } .goods-item{ width: 80px; height: 100px; display: flex; flex-direction: column; justify-content: center; align-items: center; } .goods-img{ width: 50px; } .bottom{ width: 100%; height: 60px; text-align: center; line-height: 80px; font-size: 10px; color: rgb(139, 135, 135); }
到此这篇关于微信小程序实现商品数据联动的文章就介绍到这了,更多相关小程序商品数据联动内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们!
赞 (0)