uniapp利用movable-area制作可滑动进度条

 最近想做个进度条，发现百度到的结果和自己要的不一样，于是结合https://ext.dcloud.net.cn/plugin?id=1339源代码做了一个简单的进度条，代码如下：

<template>
    <view class="page" >
        <movable-area class="zoom">
            <movable-view x="100" direction="all" inertia="true" class="ball" @click="useCamera" @touchmove='getInfo' ></movable-view>
        </movable-area>
        <view class="" >{{position}}</view>
    </view>
</template>

<script>
    export default {
        data() {
            return {
                position:''
            }
        },
        mounted() {
            this.getInfo()
        },
        methods: {
            getInfo:function(){
                const query = uni.createSelectorQuery().in(this);
                query.select('.ball').boundingClientRect(data => {
                var result = (data.left-47)/124*50
                this.position = parseInt(result)
                }).exec();
            }
        }
    }
</script>

<style>
    .page {
        display: flex;
        flex-direction: row;
    }
    
    .zoom {
        width: 560rpx;
        height: 64rpx;
        margin-left: 95rpx;
        background-color: #007AFF;
        border-radius: 64rpx;
    }
    .ball {
        width: 64rpx;
        height: 64rpx;
        border-radius: 100%;
        background-color: #00FFFF;
    }
</style>