wysiwyg mindmup text editor : how to get the formatted text on server side? -

hello learning bootstrap , have wysiwyg editor. found bootstrap-wysiwyg , want utilize it.

http://mindmup.github.io/bootstrap-wysiwyg/

this illustration in website official use

<div id="editor"> </div>

not use

<input type="text" name="editor"> or <textarea name="editor"> </textarea>

however, cannot figure out how formatted text on server-side when form submitted.

text editor wysiwyg server-side server

Four