Getting selected html content in tinymce editor

Question

I have created a custom button using this code

    setup : function(ed) {
    ed.addButton(\'Tittle\', {
                title : \'Tittle\',
                         


        

Answer 1

var node = tinyMCE.activeEditor.selection.getContent();
tinyMCE.execCommand('mceReplaceContent', false, %your value, can use node%");

Answer 2

try

selection.getContent({format : 'text'});

or

selection.getContent({format : 'html'});

http://www.tinymce.com/wiki.php/API3:method.tinymce.dom.Selection.getContent

EDIT: To achieve what you want you could do:

if(c!="TITTLE") {

  node = ed.selection.getNode();

  with(document.getElementById(iframe_id).contentWindow){
      var newElement = document.createElement("tittle");
      newElement.innerHTML = node.innerHTML;
  }

  node.parentNode.replaceChild(newElement, node);

}
else {

  node = ed.selection.getNode();

  with(document.getElementById(iframe_id).contentWindow){
      var newElement = document.createTextNode(node.innerHTML);
  }

  node.parentNode.replaceChild(newElement, node);
}