Post comments on Facebook page via console

Question

Like in the image, the Facebook comment box has no submit button, when you write something and press Enter button, the comment posted.

I want to submit the comment via J

Answer 1

Here is a working solution after 3 weeks of experimenting (using @Benjamin Solum's fireEvent function):

• this version posts a comment only for the first post on the page (by using querySelector method)

• this version can be used only on your personal wall (unless you change the query selectors)

  function fireEvent(type, element, keyCode) {
      var evt;
  
      if(document.createEvent) {
          evt = document.createEvent("HTMLEvents");
          evt.initEvent(type, true, true);
      } else {
          evt = document.createEventObject();
          evt.eventType = type;
      }
  
      evt.eventName = type;
  
      if (keyCode !== undefined){ 
          evt.keyCode = keyCode;
          evt.which = keyCode;
      }
  
      if(document.createEvent) {
          element.dispatchEvent(evt);
      } else {
          element.fireEvent("on" + evt.eventType, evt);
      }
  }
  
  // clicking the comment link - it reveals the combobox
  document.querySelector(".fbTimelineSection .comment_link").click();
  
  setTimeout(function(){
      var combobox = document.querySelector(".fbTimelineSection [role='combobox']");
      var spanWrapper = document.querySelector(".fbTimelineSection [role='combobox'] span");
  
      // add text to the combobox
      spanWrapper.innerHTML = "Thank you!";
  
      var spanElement = document.querySelector(".fbTimelineSection [role='combobox'] span span");
  
      fireEvent("blur", combobox);
      fireEvent("focus", combobox);
      fireEvent("input", combobox);
      fireEvent("keydown", spanElement, 13); // pushing enter
  },2000);