CKEditor jQuery Value is Empty -

ckeditor jquery value ?

var val = jquery('.ckeditor').val();
or
var val = jquery('textarea[name="content"]').val();

problem : value empty;
ckeditor version 4.x;

help me

if have instantiated ckeditor recommended tutorials, example:

editor = ckeditor.appendto("editorcontainer", config, ""); 

then may content following call:

editor.getdata();