Dynamically Scrolling a Textarea

Solution 1:

As a quick hack you can just do this:

textArea.scrollTop = 99999;

Another option is to try it in a timer:

setTimeout(function()
{
    var textArea = document.getElementById('outputTextResultsArea');
    textArea.scrollTop = textArea.scrollHeight;
}, 10);

Solution 2:

Using jQuery, $("textarea").scrollHeight(99999) works great on Firefox and Chrome but not on IE. It appears to set it to the max number of lines in the textarea, whereas scrollHeight is supposed to be the number of pixels. (Awesome show great job IE). This appears to work though:

      $("textarea").scrollTop(99999)
      $("textarea").scrollTop($("textarea").scrollTop()*12)

I think this assumes a 12px font-height. I would love to find a more robust/straightforward way to do this.

Solution 3:

Instead of using the timeout, call that function on every AJAX response - provided you can tweak it.

That would free your browser from unnecessary timeouts.