How to create a timestamp with javascript

Question

I want to use a timestamp as an update indicator(last updated at), so i need a current time, month/day/year/hours/minutes/seconds, but the date() returns an live value. Is there a way to do this?

UPDATE: the idea is like this http://web.student.tuwien.ac.at/~e9125168/javas/jstamp.html (this shows a last modified time, but this is for the document).

The script where i need to show a 'last updated on' time is for an jquery ajax script, which updates a certain piece of code every ... seconds/minutes.

What do you mean by live value? As far as I know, new Date().toString() should work just fine... — JCOC611
– JCOC611, Commented Oct 29, 2011 at 20:50
well if i use the getSeconds() if gives me an live value and not a fixed value, so if i want to place a line with the last update at: i will get a current value — user759235
– user759235, Commented Oct 29, 2011 at 20:56

Daniel Teichman · Accepted Answer · 2016-05-11 23:05:20Z

3

function getPastTimestamp(t) {
    var d = new Date(t);
    var output = "";
    var items = new Array();
    var i = 0;
    items[i++] = d.getMonth() + 1;
    items[i++] = d.getDate();
    items[i++] = d.getFullYear();
    items[i++] = d.getHours();
    items[i++] = d.getMinutes();
    items[i] = d.getSeconds();

    for (i = 0; i < items.length; i += 1) {
        output += (items[i] < 10) ? "0" + items[i] : items[i];
        if (i < items.length - 1) output += '/';
    }

    return output;
}

function getCurrentTimestamp() {
    return getPastTimestamp((new Date()).getTime());
}

edited May 11, 2016 at 23:05

answered Oct 29, 2011 at 21:10

Daniel Teichman

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4 Comments

user759235 Over a year ago

Thanks but this shows the current time, and not a fixed timestamp.

Daniel Teichman Over a year ago

You can convert a fixed timestamp from it's milliseconds-since-epoch representation by calling getPastTimestamp(YOURTIMESTAMP)...

Black Over a year ago

This does not work correctly. I get 03/11/2016/09/38/00/ even tho today is 04/11/2016/09/38/00/

Daniel Teichman Over a year ago

I've changed the code to display the calendar month instead of the number of months that have passed since Jan 1 of the year of the timestamp.

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