Quick-escape functionality

quick-esc.js

(function() {
  // the ESC button on the page
  var quickESCButton = document.getElementById('quick-esc')

  function getAway() {
    // open new tab with innocent site
    window.open("http://weather.com", "_newtab")
    // replace current site with another benign site
    window.location.replace('http://google.com')
  }

  // automatically leave site if page left idle for a long time
  function idleLeaveSiteTimer() {
    var t
    window.onload = resetTimer
    window.onmousemove = resetTimer
    window.onmousedown = resetTimer // catches touchscreen presses
    window.onclick = resetTimer     // catches touchpad clicks
    window.onscroll = resetTimer    // catches scrolling with arrow keys
    window.onkeypress = resetTimer

    function resetTimer() {
      clearTimeout(t)
      t = setTimeout(getAway, 300000)  // time is in milliseconds (5 min)
    }
  }

  // keyboard ESC
  document.addEventListener('keyup', function(e) {
    if (e.keyCode == 27) { // esc key
      getAway()
    }
  })

  quickESCButton.addEventListener('click', function(e) {
    getAway()
  })

  idleLeaveSiteTimer()
})()

The back button was still working in chrome and edge. Check these out if you absolutely need to disable the back button:

• https://stackoverflow.com/questions/12381563/how-to-stop-browser-back-button-using-javascript/12381873#12381873
• https://www.irt.org/script/311.htm

The solution of adding window.history.forward(1); to my script worked for me! It just redirects you to a new blank tab.