script.coffee

noHandle = false

focusHandler = (e)->
  if e.target.isContentEditable
    noHandle = true
  else
    nohandle = false

keypressHandler = (e)->
  return if noHandle
  switch String.fromCharCode(e.keyCode)
    when 'h'
      window.history.back()
    when 'l'
      window.history.forward()
    when 'j'
      window.scrollBy(0, 100)
    when 'k'
      window.scrollBy(0, -100)
    else
      console.log(e.keyCode)
      console.log(String.fromCharCode(e.keyCode))

document.addEventListener("keypress", keypressHandler, true)
document.addEventListener("focus", focusHandler, true)