Copy/Paste doesn't work on Bootstrap dialog on IE

[Gabriel-Lahyani]

Description

The feature Copy/Paste works well on Bootstrap dialog both on Chrome and Firefox.
But fails on IE. (checked on IE9, IE10, IE11on Windows 7).
Handsontable 0.14.1

How to fix

Copy the CopyPasteDiv tag within the bootstrap modal dialog.

   <div style="left: -10000px; top: -10000px; position: fixed;" id="CopyPasteDiv"><textarea    style="width: 10000px; height: 10000px; overflow: hidden; opacity: 0;" class="copyPaste"></textarea>
   </div> 

And, when you copy the CopyPasteTag, pay attention to not return to the line before the tag 'textarea'.
For instance, copying the CopyPasteDiv tag like this will fail for all browsers:

   <div style="left: -10000px; top: -10000px; position: fixed;" id="CopyPasteDiv">
          <textarea    style="width: 10000px; height: 10000px; overflow: hidden; opacity: 0;" class="copyPaste"></textarea>
   </div> 

Reason:
handsontable.full.js, Line 9678:

     if (document.getElementById('CopyPasteDiv')) {
        this.elDiv = document.getElementById('CopyPasteDiv');
        this.elTextarea = this.elDiv.firstChild;
    }

If there is space or line return between 'div id="CopyPasteDiv"' and 'textarea', this space or line return will be interpreted as the firstChild and will fail for all Browsers.

Note: easy to check this, regarding the IE debug mode:
Text - Empty Text Node

Proposed Solution

     if (document.getElementById('CopyPasteDiv')) {
          this.elDiv = document.getElementById('CopyPasteDiv');
          // this.elTextarea = this.elDiv.firstChild;
          var textareas = this.elDiv.getElementsByTagName('textarea');
          this.elTextarea = textareas.length ? textareas[0] : null;
     }

[AMBudnik]

I'm transferring all the improvement suggestion to our Wiki section at: improvement suggestions

Please feel free to add any additional suggestions/tips or investigation results.

Issue is closed. It will be reopened with a developing update.

[burnash]

Had similar issue in Chrome 50.0.2661.94, Handsontable 0.15.1, and Bootstrap 3.3.5. @Gabriel-Lahyani solution fixed the problem.