【JavaScript】Date对象（创建时间对象、常用Date方法总结）

var time = new Date();
console.log(time);
//Fri Jul 01 2022 11:04:35 GMT+0800 (中国标准时间)

var time2 = new Date('6/7/2019 8:00:00');
console.log(time2)
//Fri Jun 07 2019 08:00:00 GMT+0800 (中国标准时间)

var time1 = new Date();
console.log(time1);
//Fri Jul 01 2022 11:18:49 GMT+0800 (中国标准时间)
console.log(time1.getDate());
//1

var time1 = new Date();
console.log(time1);
//Fri Jul 01 2022 11:18:49 GMT+0800 (中国标准时间)
console.log(time1.getDay())
//5

var time1 = new Date();
console.log(time1);
//Fri Jul 01 2022 11:18:49 GMT+0800 (中国标准时间)
console.log(time1.getMonth());
//6

var time1 = new Date();
console.log(time1);
//Fri Jul 01 2022 11:18:49 GMT+0800 (中国标准时间)
console.log(time1.getFullYear());
//2022

var time1 = new Date();
console.log(time1);
//Fri Jul 01 2022 11:40:20 GMT+0800 (中国标准时间)
console.log(time1.getHours()); //返回小时
//11
console.log(time1.getMinutes()); //返回分钟
//40
console.log(time1.getSeconds()); //返回秒
//20
console.log(time1.getMilliseconds()); //返回毫秒
//893

var time1 = new Date();
console.log(time1);
//Fri Jul 01 2022 11:54:40 GMT+0800 (中国标准时间)
console.log(time1.getTime());
//1656647680176

console.log(Date.now()); //返回当前时间戳
//1656648040077

var start_time = Date.now();
for(var i = 0;i < 50 ; i++){
    console.log(i);
}
var end_time = Date.now();
var time = end_time - start_time;
console.log('该for循环花费了'+time/1000 +'s')