How do I generate a number after a button is clicked? [duplicate]

This question already has answers here: Closed 12 years ago.

Possible Dupl开发者_如何学JAVAicate:

How to create a GUID / UUID in Javascript?

I need to have a script that generates random numbers and letters with a form that looks like this:

M3KRT-CKKYV-YH4G4-YXP42-46FMT

Prefer jQuery, or javascript. I know how to generate number when the button is click using the .click() method in jQuery. But I can not find out how to actually make the code :(

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Like this: Create GUID / UUID in JavaScript?

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Why do you include Win7 license key in your question?

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Modified this example a little:

Create GUID / UUID in JavaScript?

And came up with this:

function S5() {
    return (((1 + Math.random()) * 0x100000) | 0).toString(16).substring(1);
}
function guid() {
    return (S5() + "-" + S5() + "-" + S5() + "-" + S5() + "-" + S5()).toUpperCase();
}

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Try this out...

function createGuid () {
  for (var i=5, out=[]; i--;) {
    out.push((Math.random()*58786559+1679615|0).toString(36));
  }
  return out.join('-').toUpperCase();
}

alert(createGuid());