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Re: OT: Displaying current time on a website

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In comp.lang.javascript message <l7a3rn$7d6$1@softins.softins.co.uk>,
Fri, 29 Nov 2013 13:12:23, Tony Mountifield <tony@mountifield.org>
posted:

>function update() {
>        var clock = document.getElementById('clock');
>        var clienttime = new Date().getTime();
>        var servertime = serverstart + (clienttime-clientstart);
>        //
>        clock.innerHTML = new Date(servertime).outputDate();
>        setTimeout(update,1000-(servertime%1000));
>}

I think you do not need to ask to create a second Date Object.  OTOH,
the system could easily choose not to create the first one.


function update() {
        var clock = document.getElementById('clock');           //// A
        var clienttime = new Date().getTime();
        var servertime = serverstart + (clienttime-clientstart);
        clienttime.setTime(servertime)                          //// B
        clock.innerHTML = clienttime.outputDate();              //// C
        setTimeout(update, 1000-(servertime%1000));
}

A) Outside the function will save a little execution time
B) Added
C) Altered

Now rename clienttime to suit the new code.

UNTESTED.

-- 
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Re: OT: Displaying current time on a website Rhino <no_offline_contact_please@example.com> - 2013-11-27 16:15 -0500
  Re: OT: Displaying current time on a website Denis McMahon <denismfmcmahon@gmail.com> - 2013-11-28 01:11 +0000
    Re: OT: Displaying current time on a website "Jukka K. Korpela" <jkorpela@cs.tut.fi> - 2013-11-28 11:20 +0200
      Re: OT: Displaying current time on a website Denis McMahon <denismfmcmahon@gmail.com> - 2013-11-29 00:12 +0000
        Re: OT: Displaying current time on a website Andrew Poulos <ap_prog@hotmail.com> - 2013-11-29 13:51 +1100
        Re: OT: Displaying current time on a website Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-11-29 10:58 +0100
    Re: OT: Displaying current time on a website Dr J R Stockton <reply1300@merlyn.demon.co.uk.invalid> - 2013-11-29 21:30 +0000
  Re: OT: Displaying current time on a website Stefan Weiss <krewecherl@gmail.com> - 2013-11-28 23:09 +0100
    Re: OT: Displaying current time on a website tony@mountifield.org (Tony Mountifield) - 2013-11-28 23:24 +0000
      Re: OT: Displaying current time on a website tony@mountifield.org (Tony Mountifield) - 2013-11-29 13:12 +0000
        Re: OT: Displaying current time on a website Stefan Weiss <krewecherl@gmail.com> - 2013-11-29 14:39 +0100
        Re: OT: Displaying current time on a website Dr J R Stockton <reply1300@merlyn.demon.co.uk.invalid> - 2013-11-30 20:35 +0000
          Re: OT: Displaying current time on a website "Evertjan." <exjxw.hannivoort@interxnl.net> - 2013-12-01 07:57 +0000

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