JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/ckeditor/4.2/ckeditor.js"></script>
<textarea name="name" id="french" cols="30" rows="10" data-lang="fr"></textarea>

<textarea name="name" id="german" cols="30" rows="10" data-lang="de"></textarea>

JavaScript

CKEDITOR.on( 'instanceCreated', function( evt ) {    
    var editor = evt.editor,
        element = editor.element,
        lang = element.data( 'lang' );
    
    if ( lang )
        evt.editor.config.language = lang;
});

CKEDITOR.replace( 'french' );
CKEDITOR.replace( 'german' );