function millisToMinutesAndSeconds(millis) {
var minutes = Math.floor(millis / 60000);
var seconds = ((millis % 60000) / 1000).toFixed(0);
return minutes + ":" + (seconds < 10 ? '0' : '') + seconds;
}
millisToMinutesAndSeconds(298999); // "4:59"
millisToMinutesAndSeconds(60999); // "1:01"
const millisToMinutesAndSeconds = (millis) => {
var minutes = Math.floor(millis / 60000);
var seconds = ((millis % 60000) / 1000).toFixed(0);
//ES6 interpolated literals/template literals
//If seconds is less than 10 put a zero in front.
return `${minutes}:${(seconds < 10 ? "0" : "")}${seconds}`;
}
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);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 CSTfunction 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)) //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())