Summary of methods for obtaining the current timestamp in JS

5 ways to get the current timestamp in js

1. Get the timestamp accurate to the second, 13 digits

const timestamp = Date.parse(new Date());
console.log(timestamp);
 
//输出 1591669256000   13位

2. Get the timestamp accurate to milliseconds, 13 digits

const timestamp = Math.round(new Date());
console.log(timestamp);
 
//输出 1591669961203   13位

3. Get the timestamp accurate to milliseconds, 13 digits

const timestamp = (new Date()).valueOf();
console.log(timestamp);
 
//输出 1591670037603   13位

4. Get the timestamp accurate to milliseconds, 13 digits

const timestamp = new Date().getTime();
console.log(timestamp);
 
//输出 1591670068833   13位

5. Get the timestamp accurate to milliseconds, 13 digits

const timestamp = +new Date();
console.log(timestamp);
 
//输出 1591670099066   13位

js method to get the timestamp of today, this week, this month, this year

1. Today's time

// 今天开始时间的时间戳
new Date(new Date().toLocaleDateString()).getTime()
// 今天结束时间的时间戳
new Date(new Date().toLocaleDateString()).getTime() + 24 * 60 * 60 * 1000 - 1

2. Time of the week

// 本周开始时间的时间戳
new Date(new Date().setHours(0, 0, 0) - (new Date().getDay() - 1) *24 * 60 * 60 *1000)
// 本周结束时间的时间戳
new Date(new Date().setHours(0, 0, 0) + (7 - new Date().getDay()) *24 * 60 * 60 *1000)

3. Time of the month

// 本月开始时间的时间戳
new Date(new Date(new Date().getFullYear(), new Date().getMonth(), 1).setHours(0, 0, 0))
// 本月结束时间的时间戳
new Date(new Date(new Date().getFullYear(), new Date().getMonth()+ 1, 0).setHours(23, 59, 59, 59))

4. Time of the year

// 本年开始时间的时间戳
new Date(new Date().getFullYear(), 0, 1)
// 本年结束时间的时间戳
new Date(new Date(new Date().getFullYear() + 1, 0, 0).setHours(23, 59, 59, 59))