uniapp可滚动视图区域_uni滚动到视口位置出现

<template>
    <view>
        <scroll-view :scroll-top="scrollTop" scroll-y="true" @scrolltoupper="upper" @scrolltolower="lower" @scroll="scroll" class="scroll-y" scroll-with-animation="true">
            <view class="scroll-y" style="background-color: red;">A</view>
            <view class="scroll-y" style="background-color: green;">B</view>
            <view class="scroll-y" style="background-color: blue;">C</view>
        </scroll-view>
        <view @click="goTop">点我回到顶部</view>
        <scroll-view @scroll="scroll1" :scroll-left="scrollLeft" class="scroll-x x" scroll-x="true" >
            <view class="scroll-x" style="background-color: red;">A</view>
            <view class="scroll-x" style="background-color: green;">B</view>
            <view class="scroll-x" style="background-color: blue;">C</view>
        </scroll-view>
        <view @click="goLeft">点我回到最左侧</view>
    </view>
</template>

<script>
    export default {
        data() {
            return {
                //当前距离顶部位置
                scrollTop:0,
                scrollLeft:0,
                old: {
                    //记录距离顶部位置
                    scrollTop: 0,
                    scrollLeft:0
                }
            }
        },
        onLoad(e) {
        },
        methods: {
            upper: function(e) {
                console.log('我到顶部了')
            },
            lower: function(e) {
                console.log('我到底部了')
            },
            scroll: function(e) {
                    // console.log(e)
                    this.old.scrollTop = e.detail.scrollTop
            },
            goTop: function(e) {
                    //给当前距离顶部位置赋值
                    this.scrollTop = this.old.scrollTop
                    //异步更新距离顶部位置
                    this.$nextTick(function() {
                            this.scrollTop = 0
                    });
            },
            scroll1(e){
                this.old.scrollLeft=e.detail.scrollLeft
            },
            goLeft(e){
                this.scrollLeft = this.old.scrollLeft
                //异步更新距离顶部位置
                this.$nextTick(function() {
                        this.scrollLeft = 0
                });
            }
        }
    }
</script>

<style>
    .scroll-y{
        width: 100%;
        height: 300rpx;
        text-align: center;
        line-height: 300rpx;
    }
    .scroll-x{
        width: 100%;
        height: 300rpx;
        text-align: center;
        line-height: 300rpx;
        display: inline-block;
    }
    .x{
        flex-wrap: nowrap;
        white-space: nowrap;
    }
</style>
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