CKEditor
The CKEditor field type allows you to fill text in CKEditor is a widely used open-source WYSIWYG editor provided by https://ckeditor.com/.
How to fill text in the ckeditor-4 editor with Javascript?
js
const editor = CKEDITOR.instances["editornya"];
editor.setData("Value");Field Value
You can provide content/value directly in the field's default value option.