Formatting a 32 character random string in Javascript

Question

For some reason I have been unable to find a quick solution to this. All I am trying to do is add dashes to a "randomly" generated 32 character string in Javascript like so:

From: AA681EBC64F642B1AFA95EE2A5D87350
To: AA681EBC - 64F6 - 42B1 - AFA9 - 5EE2A5D87350 (added spaces for clarity)

I assume the code would look something along the lines of

String.format(randomString, {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx});

but in Javascript

Current code (using angular-random-string.js):

var value = angular.uppercase(randomString(32));

What have you tried? You say you can't find a solution. Does that mean you've tried to write one? If so, what issues did you encounter? — user1106925
– user1106925, Commented Sep 30, 2015 at 22:39
are you really asking this dup stackoverflow.com/questions/105034/… — ergonaut
– ergonaut, Commented Sep 30, 2015 at 22:41
Just attached what I'm using. I have been looking for a similar example that I posted and have not found anything. A way to define characters and then divide by dashes. I will try that example ergonaut. Looks like what I need and would actually allow me to remove the angular-random-string.js add on — shredMER
– shredMER, Commented Sep 30, 2015 at 22:45

Tivie · Accepted Answer · 2015-09-30 22:45:52Z

1

You can use something like this: (fiddle here)

var code = "AA681EBC64F642B1AFA95EE2A5D87350";
var test = "AA681EBC-64F6-42B1-AFA9-5EE2A5D87350"
var fCode = code.substring(0, 8) + "-" + code.substring(8, 12) + "-" + code.substring(12, 16) + "-" + code.substring(16, 20) + "-" + code.substring(20);

// test
console.log(test === fCode);

answered Sep 30, 2015 at 22:45

Tivie

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1 Comment

shredMER Over a year ago

Perfect, that's exactly what I was looking for. Thank you!

Phil · Accepted Answer · 2015-09-30 22:55:06Z

0

Using your existing function you could do this:

var parts = [randomString(8), randomString(4), randomString(4), randomString(4), randomString(12)];
var value = parts.join('-').toUpperCase();

answered Sep 30, 2015 at 22:55

Phil

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