<view class="container">

<view class="content">
? <view class="all-food">
? ? <view class="food">全部食物</view>
? ? ? <scroll-view class="food-scroll" scroll-y="true" scroll-into-view="{{toView}}" scroll-with-animation="true">
? ? ? ? <view class="food-list">

? ? ? ? ? ? <view wx:for="{{foodList}}" wx:key="{{index}}" id="{{'food'+index}}" ?data-title="{{item.title}}">
? ? ? ? ? ? ? <view class="nav-text">
? ? ? ? ? ? ? ? <text>{{item.title}}</text>
? ? ? ? ? ? ? </view>
? ? ? ? ? ? ? <view class="show-food">
? ? ? ? ? ? ? ? <text wx:for="{{item.lists}}" wx:key="{{index}}">{{item}}</text>
? ? ? ? ? ? ? </view>
? ? ? ? ? ? </view>

? ? ? ? </view>
? ? ? </scroll-view>
? ? </view>

? <view class="search-nav" ?bindtouchstart="touchStart" bindtouchmove="touchMove" bindtouchend="touchEnd">
? ? <text bindtap="foodScroll" data-index="{{index}}" wx:for="{{searchNav}}" wx:key="{{index}}">{{item}}</text>
? </view>
</view>
</view>

js文件

let foodList = require('../../utils/common');
Page({

? /**
? ?* 頁(yè)面的初始數(shù)據(jù)
? ?*/
? data: {
? ? foodList:[],
? ? toView:'',
? ? searchNav:[]
? },

? getFoodList(){
?? ??? ?let searchNav = this.data.searchNav
?? ??? ?for(let i in foodList.foodList){
?? ??? ??? ?searchNav.push(foodList.foodList[i].title)
?? ??? ?}
?? ??? ?this.setData({
?? ??? ??? ?foodList:foodList.foodList,
?? ??? ??? ?searchNav:searchNav
?? ??? ?})

? },
??
? foodScroll(e){
?? ??? ?let index = e.currentTarget.dataset.index;
?? ??? ?this.setData({
?? ??? ??? ?toView:`food${index}`
?? ??? ?})

?? ?},
? /**
? ?* 生命周期函數(shù)--監(jiān)聽(tīng)頁(yè)面加載
? ?*/
? onLoad: function (options) {
? ? this.getFoodList();
? },

? /**
? ?* 生命周期函數(shù)--監(jiān)聽(tīng)頁(yè)面初次渲染完成
? ?*/
? onReady: function () {
? ??
? },

? /**
? ?* 生命周期函數(shù)--監(jiān)聽(tīng)頁(yè)面顯示
? ?*/
? onShow: function () {
? ??
? },

? /**
? ?* 生命周期函數(shù)--監(jiān)聽(tīng)頁(yè)面隱藏
? ?*/
? onHide: function () {
? ??
? },

? /**
? ?* 生命周期函數(shù)--監(jiān)聽(tīng)頁(yè)面卸載
? ?*/
? onUnload: function () {
? ??
? },

? /**
? ?* 頁(yè)面相關(guān)事件處理函數(shù)--監(jiān)聽(tīng)用戶下拉動(dòng)作
? ?*/
? onPullDownRefresh: function () {
? ??
? },

? /**
? ?* 頁(yè)面上拉觸底事件的處理函數(shù)
? ?*/
? onReachBottom: function () {
? ??
? },

? /**
? ?* 用戶點(diǎn)擊右上角分享
? ?*/
? onShareAppMessage: function () {
? ??
? }
})

wxss文件

?/* pages/city/city.wxss */
?.container {
? padding: 0 5rpx;
? display: flex;
? justify-content:row;
? background-color: #fff;
}

.content{
? margin-top: 30rpx;
? width: 100%;
}

.food{
? font-size: 40rpx;
? padding-bottom: 10rpx;
? border-bottom: 1rpx solid #fff;
? height:30rpx;
? line-height:30rpx;

}

.food-scroll {
? left: 0;
? position: fixed;
? height: 100%;
? width: 720rpx;
}

.show-food{
? display: flex;
? flex-direction: column;
? justify-content: left;
??
}
.show-food text{
? margin-top: 10rpx;
? margin-bottom: 10rpx;
? font-size: 32rpx;
? border-bottom: 1rpx solid silver;
}

.search-nav{
? position: fixed;
? top: 120rpx;
? bottom: 5rpx;
? right: 5rpx;
? display:flex;
? flex-direction: column;
? justify-content: space-around;
}
.search-nav text{
? text-align: center;
? font-size: 24rpx;
}

common.js文件

let food = [?? ??
? {
? ? ? "title":"A",
? ? ? "lists":[
? ? ? "艾蒿"
? ? ? ? ]
? },
? {
? ? ? "title":"B",
? ? ? "lists":["白蘿卜","白瓜","白菜","菠菜","白筍","百合","擯榔","白花菜","白沙蒿","百里香","豆腐柴","芭蕉","菠蘿","白金瓜"
? ? ? ? ]
? },
? {
? ? ? "title":"C",
? ? ? "lists":["蠶豆","菜花","春筍","慈菇","刺兒菜","草菇","草莓","橙","茶腸","草魚(yú)","鯧魚(yú)"
? ? ? ? ]
? },
? {
? ? ? "title":"D",
? ? ? "lists":["豆腐","豆?jié){","豆腐腦","豆奶","豆汁","豆腐絲","豆腐卷","豆腐皮","豆腐干","豆干尖","豆沙","刀豆","豆角","冬瓜","大蒜","大蔥","大白菜","冬寒菜","冬筍","豆瓣菜","大薯","大車(chē)前","地膚","大黃","大麻","大紅菇","地衣","蛋清腸"
? ? ? ? ]
? },
? {
? ? ? "title":"E",
? ? ? "lists":["鵝肉","鵝肝","鵝腿","鵝蛋"]
? },
? {
? ? ? "title":"F",
? ? ? "lists":["粉絲","腐竹","番茄","方瓜","佛手瓜","分蔥","發(fā)菜"
? ? ? ? ]
? ? ??
? },
? {
? ? ?"title":"G",
? ? ? "lists":["掛面","甘薯","甘藍(lán)","觀達(dá)菜","枸杞","柑","桂圓","橄欖","桂魚(yú)","鮭魚(yú)"]
? ? ?
? },
? {
? ? ?"title":"H",
? ? ? "lists":["花卷","黃豆","花豆","紅蘿卜","花葉蘿卜","胡蘿卜","荷蘭豆","黃豆芽","葫子","葫蘆","葫蘆條","黃瓜","茴香","黑筍","花案菜","槐花","黃麻葉","苦苦菜","猴頭菇","黃菇","海帶","海棠","黃皮果","火腿腸","火雞","火雞肝","火雞腿","黃油","黃鱔","鰉魚(yú)","黃骨魚(yú)"
? ? ? ?]
? },
? {
? ? ?"title":"J",
? ? ? "lists":["豇豆","芥菜頭","節(jié)瓜","金瓜","金絲瓜","韭菜","韭黃","韭苔","金針菜","菊筍","茭白","姜","蕨菜","金針菇","雞肉","雞腿","雞心","雞翅","雞腎","雞脖"]
? ? ? ? ? ?
? },
? {
? ? ?"title":"K",
? ? ? "lists":["空鍋餅","苦瓜","苦菜","口蘑","葵花籽"]

? },
? {
? ? ?"title":"L",
? ? ? "lists":["烙餅","綠豆餅","龍豆","綠豆芽","辣椒","蘿卜纓","落葵","輪葉黨參","羅勒","梨","梅","荔枝","栗子","臘肉","驢肉","驢鞭","驢心","駱駝肉","駱駝?wù)?,"駱駝蹄", ]

? },
? {
? ? ? "title":"M",
? ? ? "lists":["面條","饅頭","木薯","梅豆","木豆","毛豆","毛筍","馬蹄","馬齒莧","馬蘭頭","麥瓶草",
? ? ? "蘑菇","木耳","面蛋","芒果","木瓜","馬肉","馬心"
? ]
? },
? {
? ? ?"title":"N",
? ? ? "lists":["腦豆","奶茄子","南瓜","牛至","檸檬","牛肉","牛肋","牛腿","牛里脊","牛蹄筋", "牛鞭","牛肚","牛肝","牛肺","牛腦","牛骨","牛大腸","牛心","牛腎","牛肉干", "牛肉松",
? ? ? ? ? ? ? ? ? ? ]
? },
? {
? ?"title":"O",
? ? ? "lists":["藕粉","藕"]
? },
? {
? ? ?"title":"P",
? ? ? "lists":["扁豆","蒲菜","噴瓜","蒲公英","蘋(píng)果","葡萄","葡萄干"]

? },
? {
? ? ?"title":"Q",
? ? ? "lists":["蕎麥","青豆","茄子","秋葵","青蒜","芹菜","掐不齊","清明菜","球莖茴香","啟明菜葉","青菇"
? ]
? },
? {
? ? ?"title":"R",
? ? ? "lists":["人參果","肉松","兒童腸"]
? },
? {
? ? ?"title":"S",
? ? ? "lists":["燒餅","水面筋","馬鈴薯","素火腿","素大腸","素雞","素雞絲卷","素什錦","四季豆","蛇瓜","絲瓜","筍瓜","蒜苗","生菜","水芹菜","山藥","石頭菜","沙參葉","松菇","沙果","酸刺","石榴","柿子","柿餅","桑葚"
? ? ? ?]
? ? ? ? ? ?
? },
? {
? ? ?"title":"T",
? ? ? "lists":["通心面","甜椒","甜菜葉","茼蒿","湯菜","土三七","苔菜","桃","甜瓜","兔肉"
? ? ? ?]
? },
? {
? ?"title":"W",
? ?"lists":["豌豆","烏菜","萵筍","歪頭菜","梧桐子","無(wú)花果","午餐肉"
? ? ]
? },
? {
? ? ?"title":"X",
? ? ? "lists":["小豆粥","西葫蘆","小蔥","小白菜","西蘭花","香菜","莧菜","夏枯草","香椿","香茅","小旋花","竹葉菜","香菇","香蕉","西瓜","杏仁","橡子","叉燒肉","咸肉","香腸"
? ? ? ?]
? ? ? ? ? ?
? },
? {
? ? ?"title":"Y",
? ? ? "lists":["油餅","油條","油面筋","薏米","玉米","蕓豆","洋蔥","油菜","芋頭","洋姜","野蔥","野韭菜","營(yíng)野菊口","野蒜","野莧菜","榆錢(qián)","魚(yú)腥草","羊肚菌","銀耳","櫻桃","柚","楊梅"
? ? ? ?]
? ? ?
? },
? {
? ? ? "title":"Z",
? ? ? "lists":["竹筍"," 榛子","珍珠白菇","紫菜","棗","豬肉","芝麻","豬大排","豬耳","豬蹄","豬頭","豬肘","豬肺","豬肝","豬腦","豬皮","豬舌","豬腰","豬心","豬血"
? ? ? ?]
? }
? ?]
module.exports = {
? ?foodList:food
}

目錄文件