日期格式时间格式通length属性处理日期时间补零（0〇）操作

Posted 2022-02-04 web半晨

// String()和toString()的原因是：数字类型的数据没有length属性
let dateTime = new Date(),
	yer = dateTime.getFullYear(),
	moth = String(dateTime.getMonth() + 1),
	day = dateTime.getDate().toString(),
	house = dateTime.getHours().toString(),
	minute = dateTime.getMinutes().toString(),
	second = dateTime.getSeconds().toString();
  
console.log(yer);
console.log(('00' + moth).slice(moth.length));
console.log(('00' + day).slice(day.length));
console.log(('00' + house).slice(house.length));
console.log(('00' + minute).slice(minute.length));
console.log(('00' + second).slice(second.length));