scroll-view在小程序页面里实现滚动，uniapp项目

 要实现红框中的区域进行滚动,scroll-view必须写高

<template><!-- 合同-待确认 --><view class="viewport"><!-- 上 --><view class="top-box"><!-- tab --><view class="tabs"><textv-for="(item, index) in tabArr":key="item.id"class="text":class="{ active: index === activeIndex }"@tap="handleClickTab(item, index)">{{ item.title }}</text></view><!-- tab的scroll-view --><scroll-viewv-for="(val, index) in tabArr":key="val.id"v-show="activeIndex === index":scroll-y="true"class="scroll-view"><view v-show="activeIndex === 0" class="base-box"><view>33333333333</view><view>33333333333</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view><view>54555555553343</view></view><view v-show="activeIndex === 1" class="contract-content-box"></view><view v-show="activeIndex === 2" class="service-plan-box"></view></scroll-view></view><!-- 下 --><view class="bottom-box"><!-- canvas --><view class="canvas-box"></view><!-- 按钮 --><view class="btn-box"><view class="btn-save"><u-button type="primary" shape="circle" text="保存"></u-button></view><view class="btn-submit"><u-button color="#f59a23" type="primary" shape="circle" text="提交"></u-button></view></view></view><!-- 基本信息 --><!-- <view class="base-info-box" v-show="activeIndex === 0"><BaseInfo></BaseInfo></view> --><!-- 合同内容 --><!-- <view class="contract-content-box" v-show="activeIndex === 1"><ContractContent></ContractContent></view> --><!-- 服务计划 --><!-- <view class="service-plan-box" v-show="activeIndex === 2"><ServicePlan></ServicePlan></view> --></view>
</template><script setup lang="ts">
import { onLoad, onReady } from "@dcloudio/uni-app"
import { ref } from "vue"
import BaseInfo from "./components/BaseInfo.vue"
import ContractContent from "./components/ContractContent.vue"
import ServicePlan from "./components/ServicePlan.vue"// 高亮的下标
const activeIndex = ref(0)const peopleId = ref()const tabArr = ref([{id: 0,title: "基本信息",},{id: 1,title: "合同内容",},{id: 2,title: "服务计划",},
])// 页面第1次加载生命周期
onLoad((option) => {console.log(option, "option-页面第1次加载生命周期拿到的参数-等确认合同")peopleId.value = option!.itemDataIdconsole.log(peopleId.value, "peopleId.value-等确认合同")
})// 页面第1次全部渲染完毕后调用这个生命周期
onReady(() => {})// 点击tab
const handleClickTab = (item: any, index: any) => {console.log(item, "点击tab拿到的item")console.log(index, "点击tab拿到的index")activeIndex.value = index
}
</script><style lang="scss">
page {height: 100%;background-color: #fff;overflow: hidden;
}.viewport {height: 100%;font-size: 14px;display: flex;flex-direction: column;background-color: #f2f2f2;justify-content: space-between;overflow: hidden;// border: 1px solid orangered;
}.tabs {display: flex;justify-content: space-evenly;height: 100rpx;line-height: 90rpx;margin: 20rpx 20rpx 0rpx 20rpx;font-size: 28rpx;border-radius: 10rpx;box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);color: #333;background-color: #fff;position: relative;z-index: 9;.text {margin: 0 20rpx;position: relative;}.active {&::after {content: "";width: 40rpx;height: 4rpx;transform: translate(-50%);background-color: #27ba9b;position: absolute;left: 50%;bottom: 24rpx;}}
}.base-info-box {flex: 1;
}.contract-content-box {flex: 1;
}.service-plan-box {flex: 1;
}.btn-box {border: 1px solid red;margin-bottom: 20rpx;display: flex;flex-direction: row;.btn-save {padding: 0 20rpx;width: 400rpx;}.btn-submit {padding: 0 20rpx;width: 400rpx;}
}.bottom-box {width: 750rpx;height: 400rpx;border: 1px solid blue;display: flex;flex-direction: column;justify-content: space-between;
}.top-box {flex: 1;width: 750rpx;border: 1px solid orangered;display: flex;flex-direction: column;
}.scroll-view {height: 660rpx;border: 1px solid green;// flex: 1;// overflow-y: auto;
}.base-box {height: 100%;background-color: pink;overflow-y: auto;
}
</style>

 overflow-y:auto 不写也会滚动