HTML

            <script src="https://use.fontawesome.com/c1f20c2bd7.js"></script>
            <textarea id="editor"></textarea>
        

JavaScript

            var editor = new Jodit('#editor', {
               events: {
                   getIcon: function (name, control, clearName) {
                       var code = clearName;

                       switch (clearName) {
                           case 'redo':
                               code = 'rotate-right';
                               break;
                           case 'video':
                               code = 'video-camera';
                               break;
                           case 'copyformat':
                               code = 'clone';
                               break;
                           case 'about':
                               code = 'question';
                               break;
                           case 'selectall':
                               code = 'legal';
                               break;
                           case 'symbol':
                               return 'Ω';
                           case 'hr':
                               code = 'minus';
                               break;
                           case 'left':
                           case 'right':
                           case 'justify':
                           case 'center':
                               code = 'align-' + name;
                               break;
                           case 'brush':
                               code = 'tint';
                               break;
                           case 'fontsize':
                               code = 'text-height';
                               break;
                           case 'ul':
                           case 'ol':
                               code = 'list-' + name;
                               break;
                           case 'source':
                               code = 'code';
                               break;
                       }

                       return '';
                   }
               }
            });
            editor.setEditorValue('<p>start</p>')