将字符串转换为日期，不带破折号

from datetime import datetime

date_str = "20220101"
date_obj = datetime.strptime(date_str, "%Y%m%d")
print(date_obj)

import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

String dateStr = "20220101";
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMdd");
LocalDate dateObj = LocalDate.parse(dateStr, formatter);
System.out.println(dateObj);

const dateStr = "20220101";
const dateObj = new Date(dateStr.substr(0, 4), dateStr.substr(4, 2) - 1, dateStr.substr(6, 2));
console.log(dateObj);