Creating GUID in Javascript

rbd · October 7th, 2004, 07:53 AM

Is there a way to create guid's from javascript? please help.

rbd

pgtips · October 7th, 2004, 09:16 AM

On a windows system you can try this:

Code:

function GUIDGen() 
{
    try
    {
        var x = new ActiveXObject("Scriptlet.TypeLib");
    return (x.GUID);
    }
    catch (e)
    {
    return ("error creating GUID");
    }
}

rbd · October 7th, 2004, 11:31 AM

thank you, pgtips. That's exactly what I was looking for.

rbd

joefawcett · October 8th, 2004, 12:54 PM

One small thing. It's safer to write:

Code:

return (x.GUID).substr(0, 38);

Otherwise you can two unwanted characters at the end of the guid.

--

Joe

--

Joe (Co-author Beginning XML, 3rd edition)

donavon · November 17th, 2006, 12:47 AM

Thanks guys. This was exactly what I was looking for. But the substring stated is incorrect. It should be as follows (and you can condense the code too).

return new ActiveXObject("Scriptlet.TypeLib").GUID.substr(1,3 6);

joefawcett · November 17th, 2006, 03:21 AM

To be fair that depends on what you need, the important thing is to chop off the last two characters of the 40 character string.

--

Joe (Microsoft MVP - XML)

shkedy · January 17th, 2007, 07:39 AM

This approach will only work in MS browsers - you can use a javascript to generate the GUID. I have posted a funciton that does just that on my blog:

http://shkedy.blogspot.com/2007/01/c...ient-side.html

joefawcett · January 17th, 2007, 08:01 AM

That's a nice bit of code but not as strict as the Microsoft GUID generation code because this takes more care to ensure uniqueness.

--

Joe (Microsoft MVP - XML)

lgodiva · November 20th, 2007, 12:14 PM

I have a similar problem; I need to find a way to uniquely identify a PC; originally I was asked to investigate retrieving the MAC address client-side and programmatically, preferably using JS or Flash. It needs to be a cross-platform, cross-OS solution. Then I stumbled on this thread describing GUID as a possible solution. However, the value *must* be unique, even if it's regenerated, for a particular PC.

I would greatly appreciate any guidance, as I'm a newbie to this area of computers and it's urgent that I solve this problem asap.

Thanks very much,

Selene