Toplist-as-a-counter

index.js

window.onbeforeunload = e => {
  postList(url, {
    nick: "onbeforeunload yes",
    message: "success ok " + Date.now()
  }).then(() => {
    console.log('posted √')
  }).catch(e => {
    console.log('couldnt post', e)
  })
}