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Vue JS: generate random numbers for invoice

i wanted to know the best way for generating random numbers for invoice and it shouldn't be duplicated .. in my project i'm posting invoice number for each user into API and ofc i should completely avoid duplication ... is there a way to do this in Vue js?

below i tried this code but i believe it might duplicate by chance :\

const Random = '0' + Math.ceil(Math.random()*1000000)+ moment(new Date()).format('DDMMYY');

about 4 years ago · Juan Pablo Isaza

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Answer 1 · 2022-07-05T05:41:20.192Z

As time cannot be repeated, you can use new Date().getTime()

Answer 2 · 2022-07-05T05:41:20.199Z

Use UUID v4

Install and import UUID

import { v4 as uuidv4 } from 'uuid';

Set invoice ID

invoice.id = uuidv4(); // ⇨ '14cd6bcd-bbfd-4a2d-3b5d-ab8dfcbd4dea'

At the backend side, don't forget to check that the invoice id is not already used.
Best way is to define a database unique key.

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Vue JS: generate random numbers for invoice

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Andres GPT