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I have one editor where I switch between content in one editor, and what I want to do when I set the new content, I would like to reset the undo possibility.

I have read on this site http://www.tinymce.com/wiki.php/api4:class.tinymce.UndoManager

That it's just to call tinymce.UndoManager.clear() but I just get that the function is undefined.

  • 1
    On the WP default TinyMCE editor is the undo button include, inside the line 2 of the TinyMCE editor. You see this second line only, after click on "Toolbar Toggle" button, the last button on TinyMCE line 1. – bueltge Jul 15 '15 at 9:42
  • @Fredrik Could you post the code you're working with so we can use that as a starting point to help you? Particularly, where you're running the clear() function – Tim Malone Jun 29 '16 at 8:02
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The global variable tinyMCE has an array of editors. So you have to call the undoManager inside them. Like this for default wp editor on post edit/create screen:

tinyMCE.editors[0].undoManager.clear();

If you want to do it in a specific editor, select the editor id in n like this:

var n = 0; // editor id
tinyMCE.editors[n].undoManager.clear();

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