1.

let d1=‘2020-11-15 17:59:20’;
let d2=‘2020-07-22 17:59:20’;
//日期比较的方法
compare(date1,date2) {
	let dates1 = new Date(date1);
	let dates2 = new Date(date2);
	if (dates1 > dates2) {
		return true
	} else {
		return false
	}
}
console.log(compare(d1,d2));// true
console.log(compare(d2,d1));// false