JAVASCRIPT

Radom String in Javascript

//Can change 7 to 2 for longer results.
let r = (Math.random() + 1).toString(36).substring(7);
console.log("random", r);
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Radom String in Javascript

var uuid = require("uuid");
var id = uuid.v4();

// "110ec58a-a0f2-4ac4-8393-c866d813b8d1"

Radom String in Javascript

// dec2hex :: Integer -> String
// i.e. 0-255 -> '00'-'ff'
function dec2hex (dec) {
  return dec.toString(16).padStart(2, "0")
}

// generateId :: Integer -> String
function generateId (len) {
  var arr = new Uint8Array((len || 40) / 2)
  window.crypto.getRandomValues(arr)
  return Array.from(arr, dec2hex).join('')
}

console.log(generateId())
// "82defcf324571e70b0521d79cce2bf3fffccd69"

console.log(generateId(20))
// "c1a050a4cd1556948d41"
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