function idGen(){

    let array = [];

    for(let i=0; i<=5; i++){

        let id = Math.floor((Math.random()*1000)+100);

        array.push(id);

    }

    let convert = array.join("-");

    return convert;//Example: 816-728-1013-821-908-660

}

$ npm install uuid

​

const uuidv4 = require("uuid/v4")

​

uuidv4()

// expected: 1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed

//you can just use date as id

Date.now()

// returns 1576996323453

const randomID = Math.random().toString(36).slice(2)