Im currently trying to add a calendar feature into my webpage, ive tried using premade widgets however they would not work for me, I have created the calendar however i now need to create some form of HTML/Javascript to make each day interactable and open a form on click where i could write a note and then save it locally whether that be in a txt file or other form, the notes need to be persistant so they should exist even after the page is closed and reopened. Eventually ill use an SQL database for this but for the moment a local copy needs to be saved.

If anyone could provide me with a script that achieves this it would help a lot, i just need a general script that i could use within my page without breaking anything as i will expand on it as i need too.

Thanks.