How to define allowed tags in CKEditor?

Question

• Sometimes users copy and paste text from different sources to CKEditor, but I want to restrict what tags they can copy to CKEditor.

• I only need to u

Answer 1

I just did this to make sure nobody could put an tag in the editor. It could probably be extended to other tags:

            CKEDITOR.on('instanceReady', function(ev)
            {
                var editor = ev.editor;
                var dataProcessor = editor.dataProcessor;
                var htmlFilter = dataProcessor && dataProcessor.htmlFilter;
                htmlFilter.addRules(
                {
                    elements : 
                    {
                        input: function(element)
                        {
                            return false;
                        },
                    }
                });
            });