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最近在做一个考勤系统时，新增班次的时候需要设置打卡时段，类似如下效果：

1、封装自定义组件Time.vue

接收参数有endHour(范围结束的小时数)、endMinute(最后一小时结束的分钟数)等，根据具体需求变动

<template><div><el-cascader :options="options" v-model="selectedTime" @change="handleTimeChange" placeholder="请选择时间"></el-cascader></div>
</template><script>
export default {props: {endHour: Number,endMinute: Number},data () {return {selectedTime: [],options: []}},watch: {selectedTime () {let minutes = this.selectedTime ? this.selectedTime[0] * 60 + this.selectedTime[1] : ''this.$emit('input', minutes)},},created() {this.generateTimeOptions()},methods: {generateTimeOptions () {this.options = []const startHour = 0; // 范围开始的小时数const endHour = this.endHour; // 范围结束的小时数const startMinutes = 1; // 范围开始的分钟数const interval = 1; // 小时的间隔const minutesInterval = 1; // 分钟的间隔for (let hour = startHour; hour <= endHour; hour += interval) {const hourValue = hour;const hourLabel = `${hourValue}小时`;const hourOption = {value: hourValue,label: hourLabel,children: []};let endMinute;if (hour === this.endHour) {// 如果是最后一个小时，设置特定范围的分钟数endMinute = this.endMinute; // 设置最后一个小时的结束分钟数} else {endMinute = 59; // 其他小时的结束分钟数为30}for (let minutes = hour === 0 ? startMinutes : 0; minutes <= endMinute; minutes += minutesInterval) {const minutesValue = minutes;const minutesLabel = `${minutesValue}分钟`;const minutesOption = {value: minutesValue,label: minutesLabel};hourOption.children.push(minutesOption);}this.options.push(hourOption);}},handleTimeChange (value) {// 处理选中时间的逻辑let timeValue = {}timeValue.orginValue = valuetimeValue.minutes = value[0] * 60 + value[1]this.$emit('timeChange', { timeValue })}}
}
</script>

2、使用

引入注册组件后使用，传入动态参数，监听timeChange方法可以拿到当前选择的时间

<Time :endHour="12" :endMinute="59" @timeChange="handleTimeChange"></Time>