Function log

extensions/firefox/options.js:134–142

(message, duration)

let logTimer
function log(message, duration) {
  clearTimeout(logTimer)
  msg.css({ opacity: 1 }).html(message)
  if (duration) {
    logTimer = setTimeout(() => {
      msg.animate({ opacity: 0 }, 300, () => msg.empty())
    }, duration)
  }
}

$(() => {
  saveBtn.on('click', save)