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Generate Unique Number in JavaScript

Here is the code that can generate a unique number in JavaScript.

function uniqueNumber() {
    var date = Date.now();
   
    if (date <= uniqueNumber.previous) {
        date = ++uniqueNumber.previous;
    } else {
        uniqueNumber.previous = date;
    }

    return date;
}

uniqueNumber.previous = 0;

function ID(){
  return uniqueNumber();
};

The ID() function will return a unique number every time you call.

Narayan Prusty
JSON.parse() throws "unexpected token" error for valid JSONStreaming File Uploads to Storage Server with Node.js
Comments: 2
  1. 5 years ago

    i want to give people a unique number. that unique number would be able to give them access to my website- to spin a wheel they could only use the number once.. do u have a javascript for that
    marvalpert@gmail.com

    ReplyCancel
    • 4 years ago

      Before reading your article i don’t know the meaning of spam but after read it i know many useable things Thanks for posting such a nice arle2ti&#8c30;.

      ReplyCancel

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Narayan Prusty

I am a software engineer specialising in Blockchain, DevOps and Go/JavaScript. This is my personal blog where I write about things that I learn and feel interesting to share.

6 years ago 2 Comments Web Development
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