Millisecond math for common time spans used in timers like setTimeout and setInterval

millisecond.js

// Math for common time spans used in timers like setTimeout and setInterval

// Once a minute
// there are 1000 milliseconds in a second and 60 seconds in a minute
1000 * 60

// Once an hour
// Same as above and there are 60 minutes in an hour
1000 * 60 * 60

// Once a day
// Same as above and there are 24 hours in a day
1000 * 60 * 60 * 24


// Once a week
// Same as above and there are 7 days in a week
1000 * 60 * 60 * 24 * 7