CKEditor 4 Quick Start Guide installation

 {{-- <script src="https://cdn.ckeditor.com/ckeditor5/11.0.1/classic/ckeditor.js"></script>--}}

 <script src="https://cdn.ckeditor.com/4.20.2/standard/ckeditor.js"></script>

<textarea class="form-control" rows="4" cols="50" id="e2" name="Content"   ></textarea>

 

{{-- <script>--}}

{{--        ClassicEditor--}}
{{--            .create( document.querySelector( '#e2' ) )--}}
{{--            .catch( error => {--}}
{{--                console.error( error );--}}
{{--            } );--}}
{{--    </script>--}}

    <script>
        // Replace the <textarea id="editor1"> with a CKEditor 4
        // instance, using default configuration.
        CKEDITOR.replace( 'e2' );
    </script>

Link: https://ckeditor.com/docs/ckeditor4/latest/guide/dev_installation.html