How to create a GUID / UUID

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function uuidv4() {
   return ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
      (c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4).toString(16)

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We can create GUID or UUID in JavaScript using the following methods −,To create or generate UUID or GUID in javascript use the following code with Math.Random() function,Note − This should not be used in production as GUID or UUID generated by Math.Random() may not be unique.,How to create animations using JavaScript?

To create or generate UUID or GUID in javascript use the following code with Math.Random() function

function createUUID() {
   return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
      var r = Math.random() * 16 | 0,
         v = c == 'x' ? r : (r & 0x3 | 0x8);
      return v.toString(16);
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In this blog post, we’ll help you do that by covering these topics: ,If you’ve looked at a UUID/GUID, you probably know the basic format: it’s five segments of seemingly random hex data, beginning with eight hex characters, followed by three four-character strings, then 12 characters at the end. These segments are separated by a “-”.,VIDEO: Building Distributed Architectures at the Edge,As a developer or admin, there are certain situations when you need to generate a unique identifier for an object. Of course, you could just create a random string to do this, but the better and more popular way is to assign a universally unique identifier (UUID) to the object. (Note that UUIDs are also sometimes known as GUIDs or globally unique identifiers.)


Complete - Support for RFC4122 version 1, 3, 4, and 5 UUIDs,For the creation of RFC4122 UUIDs,Create an RFC version 4 (random) UUID,Create an RFC version 3 (namespace w/ MD5) UUID

npm install uuid
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The following code example creates and displays the values of two Guid objects.,Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.,Initializes a new instance of the Guid structure.,On Windows, this function wraps a call to the CoCreateGuid function. The generated GUID contains 122 bits of strong entropy.

   static Guid NewGuid();
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A universally unique identifier (UUID) is a 128-bit label used for information in computer systems. The term globally unique identifier (GUID) is also used, often in software created by Microsoft.[1] ,Universally Unique Identifiers (UUIDs),^ "Universally Unique Identifiers (UUID)". H2. Retrieved 21 March 2021. ,Universal Unique Identifier - The Open Group Library

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