js查询日期

let currentDate = new Date();
console.log(currentDate); // 输出类似 "Wed Oct 06 2021 14:30:00 GMT+0800 (China Standard Time)"

let dateString = "2021-10-06";
let parsedDate = new Date(dateString);
console.log(parsedDate); // 输出 "Wed Oct 06 2021 00:00:00 GMT+0800 (China Standard Time)"

let date1 = new Date("2021-10-06");
let date2 = new Date("2021-10-07");

if (date1 < date2) {
    console.log("date1 is before date2");
} else if (date1 > date2) {
    console.log("date1 is after date2");
} else {
    console.log("date1 is equal to date2");
}

let today = new Date();
let tomorrow = new Date(today);
tomorrow.setDate(today.getDate() + 1);
console.log(tomorrow); // 输出明天的日期

let dateString = "2021-10-06T14:30:00.000Z";
let date = new Date(dateString);
console.log(date); // 输出 "Wed Oct 06 2021 22:30:00 GMT+0800 (China Standard Time)"

let dateString = "2021-10-06T14:30:00.000Z";
let date = new Date(dateString);
console.log(date.toUTCString()); // 输出 "Wed, 06 Oct 2021 14:30:00 GMT"