how to validate tinymce through jquery in asp.net

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C#

ASP.NET

Javascript

jQuery

I have many ascx control files in which I am using the tinymce editor in some ascx file there is one editor and in some files there is many editor and I am calling all ascx file in one master page on different different btn click.

Now I want, when I click on button A, and I have typed something into the tinymce editor and suddenly I click on button B then the page which is opened on btn click A must ask whether you need to save this text or not on btn click B.

How can I do it with the help of jquery or javascript?

If there is some other way then please let me know.