taienTaike_PDA_mobile2/common/utils/date.js

// 获取本月第一天和最后一天
export const getFirstandLastDay=()=>{
	const nowDate = new Date();
	const cloneNowDate = new Date();
	const fullYear = nowDate.getFullYear();
	const month = nowDate.getMonth() + 1; // getMonth 方法返回 0-11，代表1-12月
	const endOfMonth = new Date(fullYear, month, 0).getDate(); // 获取本月最后一天
	const endDate = getFullDate(cloneNowDate.setDate(endOfMonth));//当月最后一天
	const starDate = getFullDate(cloneNowDate.setDate(1));//当月第一天
	return {
		endDate,
		starDate
	}
}
function getFullDate(targetDate) {
		let D, y, m, d;
		if (targetDate) {
				D = new Date(targetDate);
				y = D.getFullYear();
				m = D.getMonth() + 1;
				d = D.getDate();
		} else {
				y = fullYear;
				m = month;
				d = date;
		}
		m = m > 9 ? m : '0' + m;
		d = d > 9 ? d : '0' + d;
		return y + '-' + m + '-' + d;
};
// 获取今天日期转成yy-dd-m
export const getCurrent=(time='',fmt)=>{

	let date=time ? new Date(time) :new Date();
	if(/(Y+)/.test(fmt)){
			fmt=fmt.replace(RegExp.$1,(date.getFullYear()+"").substr(4-RegExp.$1.length))
	}
	let o={
			"M+":date.getMonth()+1,
			"D+":date.getDate(),
			"h+":date.getHours(),
			"m+":date.getMinutes(),
			"s+":date.getSeconds()
	}
	for(let k in o){
		 if(new RegExp(`(${k})`).test(fmt)){
				 let str=o[k]+"";
					fmt=fmt.replace(RegExp.$1,(RegExp.$1.length===1) ? str : str.padStart(2,0))
		 }
	}
		return fmt
 }