node random string

function getRandomString(length) {
    var randomChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var result = '';
    for ( var i = 0; i < length; i++ ) {
        result += randomChars.charAt(Math.floor(Math.random() * randomChars.length));
    }
    return result;
}

//usage: getRandomString(20); // pass desired length of random string

var crypto = require("crypto");
var id = crypto.randomBytes(20).toString('hex');

// "bb5dc8842ca31d4603d6aa11448d1654"

 Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15);

function getRandomText(length) {
  var charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".match(/./g);
  var text = "";
  for (var i = 0; i < length; i++) result += charset[Math.floor(Math.random() * charset.length)];
  return text;
}