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In this article Xiaobian for you to introduce in detail "JavaScript how to store the date as milliseconds", the content is detailed, the steps are clear, the details are handled properly, I hope this "JavaScript how to store the date as milliseconds" article can help you solve your doubts, the following follow the editor's ideas slowly in depth, together to learn new knowledge.

JavaScript stores the date as milliseconds since 00:00:00 UTC (coordinated Universal time) on January 1, 1970.

Zero time is 00:00:00 UTC on January 1, 1970.

The current time is 1554166879383 milliseconds after January 1, 1970.

New Date (milliseconds)

New Date (milliseconds) creates a new date object at 00:00 plus milliseconds:

Example

Var d = new Date (0)

January 1, 1970 plus 100,000,000 milliseconds, approximately March 3, 1973:

Example

Var d = new Date (100000000000)

January 1, 1970 minus 100,000,000 milliseconds is approximately October 31, 1966:

Example

Var d = new Date (- 100000000000)

Example

Var d = new Date (86400000)

A day (24 hours) is 86,400,000 milliseconds.

Date method

When you create a Date object, you can manipulate it in many ways.

The date method allows you to use local time or UTC (universal or GMT) time to get and set the year, month, day, hour, minute, second, and millisecond of the date object.

The date method and time zone are described in the next chapter.

Show date

JavaScript (by default) outputs the date as a full-text string:

Wed Mar 25 2015 08:00:00 GMT+0800 (China Standard time)

When a date object is displayed in HTML, it is automatically converted to a string using the toString () method.

Example

D = new Date ()

Document.getElementById ("demo"). InnerHTML = d

Equivalent to:

D = new Date ()

Document.getElementById ("demo"). InnerHTML = d.toString ()

The toUTCString () method converts the date to a UTC string (a date display standard).

Example

Var d = new Date ()

Document.getElementById ("demo"). InnerHTML = d.toUTCString ()

The toDateString () method converts the date to a more readable format:

Example

Var d = new Date ()

Document.getElementById ("demo"). InnerHTML = d.toDateString ()

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