helpers js

gistfile1.js

function truncate(str, maxlength) {
  return (str.length > maxlength) ? str.slice(0, maxlength - 1) + '…' : str;
}

function getRandomInt(min, max) {
  return Math.floor(Math.random() * (max - min + 1)) + min;
}

function getRandomKey(arr) {
  return arr[getRandomInt(0, arr.length - 1)];
}