how to create unique id in node js code example
Example 1: javascript generate unique id
function uuidv4() {
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);
});
}
console.log(uuidv4());
Example 2: javascript uniqie id
function uuid() {
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);
});
}
var userID=uuid();
Example 3: random id number nodejs
const crypto = require("crypto");
const id = crypto.randomBytes(16).toString("hex");
console.log(id);
Example 4: node number id generator
npm i nodejs-unique-numeric-id-generator
# yarn
yarn add nodejs-unique-numeric-id-generator
# Node.js
var ID = require("nodejs-unique-numeric-id-generator")
ID.generate(new Date().toJSON()); #output: "118626"