Document editor with quill javaScript framework

I have a backend API that fetches data from MongoDB database, I have built a text editor with help of react-quill. I have created three buttons such as create, save and edit, and to show all existing data I have a dropdown menu that shows the title of documents and their contents, but when I try to create a new document i don't know how to set the values for content of a document in the text editor itself, I have created two labels in there I can type the title and content, and i need help with put request too i have implemented the method, but it's not working as it should.