CODEWITHSUNDEEP
javascriptjqueryjson
slandau
slandau

Reputation: 24082

Format Date in Javascript

How to format this:

/Date(1292962456255)/

as regular looking date in JavaScript/jQuery?

Upvotes: 4

Views: 2881

Answers (4)

Hristo
Hristo

Reputation: 46557

Check out moment.js! It's "A lightweight javascript date library for parsing, manipulating, and formatting dates". It is a really powerful little library.

Here's an example...

var today = moment(new Date());
today.format("MMMM D, YYYY h:m A");        // outputs "April 11, 2012 2:32 PM"

// in one line...
moment().format("MMMM D, YYYY h:m A");     // outputs "April 11, 2012 2:32 PM"

Here's another example...

var a = moment([2012, 2, 12, 15, 25, 50, 125]);
a.format("dddd, MMMM Do YYYY, h:mm:ss a"); // "Monday, March 12th 2012, 3:25:50 pm"
a.format("ddd, hA");                       // "Mon, 3PM"
a.format("D/M/YYYY");                      // "12/3/2012"

Also, its worth mentioning to checkout date.js. I think the two libraries complement each other.

Upvotes: 2

Theo
Theo

Reputation: 132942

The number is a timestamp with millisecond resolution. This number can be passed to JavaScript's Date class' constructor. All that is needed is some code to extract it from the string:

var dateString = "/Date(1292962456255)/";
var matches = dateString.match(/^\/Date\((\d+)\)\/$/);
var date = new Date(parseInt(matches[1], 10));

The regexp on the second line gets a bit messy since the string contains /, ( and ) at precisely the positions that they are needed in the regexp (are you sure what you have is strings that look like that, and not a description of a pattern that would extract them?).

Another way of doing it is to use eval:

var dateString = "/Date(1292962456255)/";
var date = eval("new " + dateString.substring(1, dateString.length - 1));

but that may open up for an XSS attack, so I don't recommend it.

Upvotes: 1

John Hartsock
John Hartsock

Reputation: 86892

This is what I call an "Microsoft Date" and the following function will convert the encoded date to a javascript date time

            var msDateToJSDate = function(msDate) {
                var dtE = /^\/Date\((-?[0-9]+)\)\/$/.exec(msDate);
                if (dtE) {
                    var dt = new Date(parseInt(dtE[1], 10));
                    return dt;
                }
                return null;
            }

Upvotes: 4

joksnet
joksnet

Reputation: 2325

I think this a microtime. Similar to PHP's microtime function. Or in new Date().getTime() in JavaScript.

// PHP
$ php -r "var_dump(microtime(true));"
float(1292963152.1249)

// JavaScript
new Date().getTime()
1292963411830

Upvotes: -2

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