做了个组件，实现出当日预约时间组件，效果图如下

废话不多说，直接上代码，代码简单，参数自己任意改

<template>
	<view class="inventory">
		<u-popup :show="show" :round="10" bgColor="#eee" mode="bottom" @close="close">
			<view class="openPopup">
				<view class="title">
					<view class="utitle">
						选择预约时间
					</view>
					<view class="close" @click="close">
						<u-icon name="close" color="#aaa" size="22"></u-icon>
					</view>
				</view>
				<view class="content">
					<view class="left">
						<view class="l_item active">
							{{nowWeek}}
						</view>
					</view>
					<view class="right">
						<scroll-view scroll-y="true" class="scroll-Y" :scroll-into-view="'one'+(oneCategoryActive)">
							<block v-for="(item,index) in selection" >
								<view class="r_item active" v-if="item.active" @click="selectTime(item)" :id="'one'+(index+1)">
									{{item.time}} <u-icon name="checkmark-circle-fill" color="#42c8b4" size="20"></u-icon>
								</view>
								<view class="r_item" v-else @click="selectTime(item)">
									{{item.time}}
								</view>
							</block>
						</scroll-view>
					</view>
				</view>
			</view>
		</u-popup>
	</view>
</template>

<script>
	/**
	 * 自定义时间选择器
	 * 该组件适用于当日的预约时间
	 */
	export default {
		// props: {
		// 	subscribeTime: {
		// 		type: Object,
		// 		default: ()=>{}
		// 	},
		// },
		data() {
			return {
				show: false,
				timer: null,
				tsection:[
					"00:00","00:15","00:30","00:45",
					"01:00","01:15","01:30","01:45",
					"02:00","02:15","02:30","02:45",
					"03:00","03:15","03:30","03:45",
					"04:00","04:15","04:30","04:45",
					"05:00","05:15","05:30","05:45",
					"06:00","06:15","06:30","06:45",
					"07:00","07:15","07:30","07:45",
					"08:00","08:15","08:30","08:45",
					"09:00","09:15","09:30","09:45",
					"10:00","10:15","10:30","10:45",
					"11:00","11:15","11:30","11:45",
					"12:00","12:15","12:30","12:45",
					"13:00","13:15","13:30","13:45",
					"14:00","14:15","14:30","14:45",
					"15:00","15:15","15:30","15:45",
					"16:00","16:15","16:30","16:45",
					"17:00","17:15","17:30","17:45",
					"18:00","18:15","18:30","18:45",
					"19:00","19:15","19:30","19:45",
					"20:00","20:15","20:30","20:45",
					"21:00","21:15","21:30","21:45",
					"22:00","22:15","22:30","22:45",
					"23:00","23:15","23:30","23:45",
					"23:59"
					],
				selection:[],
				nowWeek: '',
				nowDate: '',
				nowTime: '',
				subscribeTime:{time:"立即取餐",active:true},
				oneCategoryActive: 0, //一级分类点击下标
			}
		},

		methods: {
			open(data) {
				this.subscribeTime = data;
				console.log(this.subscribeTime);
				this.getDate();
			},
			close() {
				this.show = false
			},
			upper: function(e) {
			},
			lower: function(e) {
			},
			selectTime(data){
				this.close()
				data.active = true;
				this.$emit("callback",{subscribeTime:data,day:this.nowWeek,time:this.nowDate})
			},
			getDate() {
				console.log(this.subscribeTime)
				this.selection = []
				//获取当前时间
				let myDate = new Date()
				let wk = myDate.getDay()
				let yy = String(myDate.getFullYear())
				let mm = myDate.getMonth() + 1
				let dd = String(myDate.getDate() < 10 ? '0' + myDate.getDate() : myDate.getDate())
				let hou = String(myDate.getHours() < 10 ? '0' + myDate.getHours() : myDate.getHours())
				let min = String(myDate.getMinutes() < 10 ? '0' + myDate.getMinutes() : myDate.getMinutes())
				let sec = String(myDate.getSeconds() < 10 ? '0' + myDate.getSeconds() : myDate.getSeconds())
				let weeks = ['今天(周日)', '今天(周一)', '今天(周二)', '今天(周三)', '今天(周四)', '今天(周五)', '今天(周六)']
				let week = weeks[wk]
				this.nowTime = hou + ':' + min
				this.nowWeek = week
				this.nowDate = yy+'-'+mm+'-'+dd 
				for (let i = 0; i < this.tsection.length; i ++) {  
				    let start = this.tsection[i];  
				    let end = this.tsection[i + 1];  
				    if (this.nowTime <= start) {  
						if(this.subscribeTime){
							if(end == this.subscribeTime["time"]){
								this.selection.push({time:end,active:true})
							}else{
								this.selection.push({time:end,active:false})
							}
						}else{
							this.selection.push({time:end,active:false})
						}
						
				    }  
				}
				if(this.subscribeTime){
					if(this.subscribeTime["time"] == "立即取餐"){
						this.selection.unshift({time:"立即取餐",active:true})
					}else{
						this.selection.unshift({time:"立即取餐",active:false})
					}
				}else{
					this.selection.unshift({time:"立即取餐",active:true})
				}
				this.selection.map((item,index)=>{
					if(item.active){
						this.oneCategoryActive = index+1
					}
				})
				this.show = true;
			}
		}
	}
</script>
<style>
	.scroll-Y {
		height: 520rpx;
		
	}

	.scroll-view_H {
		white-space: nowrap;
		width: 100%;
	}

	.scroll-view-item {
		height: 420rpx;
		line-height: 420rpx;
		text-align: center;
		font-size: 36rpx;
	}

	.scroll-view-item_H {
		display: inline-block;
		width: 100%;
		height: 420rpx;
		line-height: 420rpx;
		text-align: center;
		font-size: 36rpx;
	}
</style>
<style lang="scss" scoped>
	.inventory {
		.openPopup {
			height: 600rpx;

			.title {
				width: 100%;
				height: 80rpx;
				font-size: 32rpx;
				line-height: 80rpx;
				// border-bottom: 2rpx solid #777;
				text-align: center;
				display: flex;
				align-items: center;
				justify-content: center;
				position: relative;

				.close {
					position: absolute;
					right: 30rpx;
					font-size: 30rpx;
					color: #aaa;
				}
			}

			.content {
				height: 520rpx;
				width: 100%;
				display: flex;

				.left {
					width: 35%;

					.l_item {
						width: 100%;
						height: 86rpx;
						line-height: 86rpx;
						text-align: center;
						background-color: #fff;
					}
				}

				.right {
					width: 65%;
					background-color: #fff;
					padding-left: 30rpx;

					.r_item {
						width: 100%;
						height: 80rpx;
						line-height: 80rpx;
						font-size: 34rpx;
						justify-content: space-between;
						border-bottom: 1rpx solid #eee;
						padding: 0 10rpx;
						padding-right: 50rpx;
						background-color: #fff;
						display: flex;
					}
				}
			}

			.active {
				color: #42c8b4;
			}
		}
	}
</style>

在父组件中

<script>
	import 引入组件
	export default {
		components: {
			注册组件
		},
		data(){
			return {
				subscribeTime:{time:"立即取餐",active:true},
				nowWeek:'',
				time:''
			}
		},
		methods: {
			opentime(){
				console.log(this.subscribeTime);
				//打开弹窗
				this.$refs.abtime.open(this.subscribeTime)
			},
			//接收返回参数
			abTimeBack(d){
				console.log(d)
				for (let key in d.subscribeTime) {
					this.subscribeTime[key] = d.subscribeTime[key]
				}
				console.log(this.subscribeTime)
				this.nowWeek = d.day
			}
		}
	}
</script>