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//Date.now() gives us the current time in milliseconds counted from 1970-01-01
const todaysDate = Date.now();
//Let's add 1 year of milliseconds.
// We know that there is 1000 milliseconds in 1 second.
// 60 seconds in 1 minute,
// 60 minutes in 1 hour,
// 24 hours in 1 day
// and 365 days in one year (leap year not included)
const dateInOneYear = new Date(todaysDate+(1000*60*60*24*365));
//To print them out in a readable way
console.log(new Date(todaysDate).toLocaleDateString())
console.log(new Date(dateInOneYear).toLocaleDateString())
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var d = new Date(1469433907836); // Parameter should be long value
d.toLocaleString() // 7/25/2016, 1:35:07 PM
d.toLocaleDateString() // 7/25/2016
d.toDateString() // Mon Jul 25 2016
d.toTimeString() // 13:35:07 GMT+0530 (India Standard Time)
d.toLocaleTimeString() // 1:35:07 PM
d.toISOString(); // 2016-07-25T08:05:07.836Z
d.toJSON(); // 2016-07-25T08:05:07.836Z
d.toString(); // Mon Jul 25 2016 13:35:07 GMT+0530 (India Standard Time)
d.toUTCString(); // Mon, 25 Jul 2016 08:05:07 GMT
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var date = new Date("11/21/1987 16:00:00"); // some mock date
var milliseconds = date.getTime();
// This will return you the number of milliseconds
// elapsed from January 1, 1970
// if your date is less than that date, the value will be negative
console.log(milliseconds);
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const milliseconds = 1575909015000
const dateObject = new Date(milliseconds)
const humanDateFormat = dateObject.toLocaleString() //2019-12-9 10:30:15
dateObject.toLocaleString("en-US", {weekday: "long"}) // Monday
dateObject.toLocaleString("en-US", {month: "long"}) // December
dateObject.toLocaleString("en-US", {day: "numeric"}) // 9
dateObject.toLocaleString("en-US", {year: "numeric"}) // 2019
dateObject.toLocaleString("en-US", {hour: "numeric"}) // 10 AM
dateObject.toLocaleString("en-US", {minute: "numeric"}) // 30
dateObject.toLocaleString("en-US", {second: "numeric"}) // 15
dateObject.toLocaleString("en-US", {timeZoneName: "short"}) // 12/9/2019, 10:30:15 AM CST
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function msToTime(s) {
// Pad to 2 or 3 digits, default is 2
function pad(n, z) {
z = z || 2;
return ('00' + n).slice(-z);
}
var ms = s % 1000;
s = (s - ms) / 1000;
var secs = s % 60;
s = (s - secs) / 60;
var mins = s % 60;
var hrs = (s - mins) / 60;
return pad(hrs) + ':' + pad(mins) + ':' + pad(secs) + '.' + pad(ms, 3);
}
console.log(msToTime(55018))
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const time1 = new Date(0);
// epoch time
console.log(time1); // Thu Jan 01 1970 05:30:00
// 100000000000 milliseconds after the epoch time
const time2 = new Date(100000000000)
console.log(time2); // Sat Mar 03 1973 15:16:40
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var date = new Date("01/21/2022 12:49:00"); // some mock date
var milliseconds = date.getTime();