js用最简单的方法获取当前时分秒（获取各种时间）

获取当前时分秒

let myDate = new Date();
let str = myDate.toTimeString(); 
let timeStr = str.substring(0,8);
console.log('输出结果：', timeStr) //输出结果： 14:11:40

拓展代码：

let dataTime = new Date(); 
console.log('dataTime:', dataTime); //Tue Apr 25 2023 14:14:28 GMT+0800 (中国标准时间)
console.log('toISOString:', dataTime.toISOString()); //2023-04-25T06:15:07.198Z
console.log('toDateString:', dataTime.toDateString()); //Tue Apr 25 2023
console.log('toUTCString:', dataTime.toUTCString()); //Tue, 25 Apr 2023 06:15:07 GMT
console.log('toJSON:', dataTime.toJSON()); //2023-04-25T06:15:07.198Z
console.log('toLocaleDateString:', dataTime.toLocaleDateString()); //2023/4/25
console.log('toLocaleString:', dataTime.toLocaleString()); //2023/4/25 14:15:07 (推荐)
console.log('toLocaleTimeString:', dataTime.toLocaleTimeString()); //14:15:07
console.log('toString:', dataTime.toString()); //Tue Apr 25 2023 14:15:07 GMT+0800 (中国标准时间)
console.log('toTimeString:', dataTime.toTimeString()); //14:15:07 GMT+0800 (中国标准时间)