Couldn't display contents of div into the editor

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Javascript

jQuery

CSS3

HTML5

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Hi I'm developing a page which contains quill rich text editor. When click Edit button, I'm trying to get the contents from .content Class. After editing, updating the contents into the same .content class through Quill editor.Yet clearly,

1) First, I want to edit the contents in the .content class via quill editor.
2) Second, I want to update the edited contents into the same .content class on update button click.
3) Third, Since i'm going to use this in a conversation, How to generate editors for each message? So that i can edit all the message separately. But now i have shown only one message in the fiddle.
Example Fiddle

What I have tried:

I tried jQury html() method and Quill editor's setText and setContents and all.