要在小程序中实现锚点的话，就要用到<scroll-view > 标签中的，scroll-into-view，详情可见文档

wxml：

<view class='scroll-box' style='height:{{ht}}px;'> <scroll-view scroll-y class='menu-tab' scroll-into-view="{{toView}}" scroll-with-animation="true"> <block wx:for="{{tabList}}" wx:key=""> <view class='item-tab {{item.checked ? "item-act":""}}' id="t{{index}}" data-index="{{index}}" bindtap='intoTab'>{{item.title}}</view> </block> </scroll-view> <scroll-view scroll-y style='height:{{ht}}px;' scroll-with-animation="true" bindscrolltoupper="upper" bindscrolltolower="lower" bindscroll="scrollRight" scroll-into-view="{{toViewRt}}"> <block wx:for="{{contList}}" wx:key=""> <view class='cont-box' id="t{{index}}" style='height:{{ht}}px;'>{{item.cont}}</view> </block> </scroll-view></view>

wxss:

.scroll-box{display: flex;flex-wrap: nowrap;}.menu-tab{ width: 180rpx; text-align: center; height: 100%; color: #666; border-right:1rpx solid #999 }.item-tab{ font-size:28rpx; padding:8rpx;}.cont-box{ border-top: 1px solid; box-sizing: border-box;}.item-act{ background: linear-gradient(to bottom right, #6C53B1 , #8B2EDF); color: #fff; border-radius: 100px;}

js:

var app = getApp(); Page({ data: { current: 0, // 左侧菜单 tabList: [ { title: 'tab1', checked: true }, { title: 'tab2', checked: false }, { title: 'tab3', checked: false }, { title: 'tab4', checked: false }, { title: 'tab5', checked: false }, { title: 'tab6', checked: false }, ], // 右侧内容 contList: [ { cont: 'tab1'}, { cont: 'tab2'}, { cont: 'tab3'}, { cont: 'tab4'}, { cont: 'tab5'}, { cont: 'tab6'}, ], }, // 循环切换 forTab(index) { let lens = this.data.tabList.length; let _id = 't' + index; for (let i = 0; i < lens; i++) { this.data.tabList[i]['checked'] = false; } this.data.tabList[index]['checked'] = true; this.setData({ tabList: this.data.tabList, toView: _id, current: index }); }, // 点击左侧菜单栏 intoTab(e) { let lens = this.data.tabList.length; let _index = e.currentTarget.dataset.index; this.forTab(_index); let _id = 't' + _index; this.setData({ toViewRt: _id }); }, // 滚动右侧菜单 scrollRight(e) { //console.log(e) let _top = e.detail.scrollTop; let progress = parseInt(_top / this.data.ht); // 计算出 当前的下标 if (progress > this.data.current) { // 向上拉动屏幕 this.setData({ current: progress }); this.forTab(this.data.current); } else if (progress == this.data.current) { return false; } else { // 向下拉动屏幕 this.setData({ current: progress == 0 ? 0 : progress-- }); this.forTab(progress); } }, onLoad: function (options) { console.log(this.data.tabList) // 框架尺寸设置 wx.getSystemInfo({ success: (options) => { var wd = options.screenWidth; // 页面宽度 var ht = options.windowHeight; // 页面高度 this.setData({ wd: wd, ht: ht }) } }); }, onShow: function () { // 初始化状态 this.setData({ toView: 't' + this.data.current, toViewRt: 't' + this.data.current }) }, })

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