获取当前日期，时间为00:00:00/23:59:59

// 获取当前日期
var currentDate = new Date();

// 设置时间为00:00:00
currentDate.setHours(0);
currentDate.setMinutes(0);
currentDate.setSeconds(0);

// 设置时间为23:59:59
currentDate.setHours(23);
currentDate.setMinutes(59);
currentDate.setSeconds(59);

// 输出结果
console.log(currentDate);

import datetime

# 获取当前日期
current_date = datetime.date.today()

# 设置时间为00:00:00
start_time = datetime.datetime.combine(current_date, datetime.time.min)

# 设置时间为23:59:59
end_time = datetime.datetime.combine(current_date, datetime.time.max)

# 输出结果
print(start_time)
print(end_time)

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;

// 获取当前日期
LocalDate currentDate = LocalDate.now();

// 设置时间为00:00:00
LocalDateTime startTime = LocalDateTime.of(currentDate, LocalTime.MIN);

// 设置时间为23:59:59
LocalDateTime endTime = LocalDateTime.of(currentDate, LocalTime.MAX);

// 输出结果
System.out.println(startTime);
System.out.println(endTime);