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uni-app商品分类导航 、双向绑定
<template> <view class="row navBox" :style="scrollHeiht"> <!-- 左侧一级分类列表 --> <scroll-view :scroll-top="scrollTopLeft" scroll-y class="leftNavBox col20-5 height-100"> <view class="leftNavItem py-20 text-center" v-for="(item,index) in leftNavData" :key="index"> <view @tap="leftTap(index)" :class="leftActiveIndex===index?'leftActive':''" class="leftNavContent py-10"> { { item.title}} </view> </view> </scroll-view> <!-- 右侧二级分类列表 --> <scroll-view @scroll="rightScroll" :scroll-top="scrollTop" scroll-y class="rightNavBox col20-15 height-100" scroll-with-animation> <view class="rightNavItem row justify-content-space-around align-items-center" v-for="(item,index) in rightNavData" :key="index"> <view class="font-bold text-center col-10"> 商品分类{ { index+1}} </view> <view class="rightNavContent display-flex align-items-center justify-content-center flex-direction-column" v-for="(item1,index1) in item" :key="index1"> <image :src="item1.url"></image> { { item1.title}} </view> </view> </scroll-view> </view> </template> <script> export default { data() { return { leftActiveIndex: 0, leftNavData: [], /* 一级导航栏的所有数据 */ rightNavData: [], /* 二级导航栏的所有数据 */ scrollTop:0, scrollHeiht:"", /* 可视区域的高度 */ leftScrollTop:[], /*左侧每一个分类项距离顶部的高度*/ rightScrollTop:[], /*右侧每一个分类项距离顶部的高度*/ leftNavItemHeight:0, /*左侧一个分类项的高度*/ scrollTopLeft:0 } }, onLoad() { /* 获取屏幕可视区域的高度 */ let height=uni.getSystemInfoSync().windowHeight this.scrollHeiht=`height:${ height}px` /* 获取模拟数据 */ for (var i = 0; i < 20; i++) { /* 左边数据 */ let data = { title: `分类${ i+1}` }; this.leftNavData.push(data); /* 右边数据 | 二位数组 */ this.rightNavData.push ([ { url: "../../static/images/cate/cate_01.png", title: `分类${ i+1}:商品` }, { url: "../../static/images/cate/cate_02.png", title: `分类${ i+1}:商品` }, { url: "../../static/images/cate/cate_03.png", title: `分类${ i+1}:商品` }, { url: "../../static/images/cate/cate_04.png", title: `分类${ i+1}
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