How to save this in local storage ?

[Stelian]

Hello, 

I made some buttons with functions to change text size and style also another button to change site theme, but I can not make them save after I go to the next page or after I reload the page. I want to use local storage but I don't know if it is possible. Here is my project:

https://github.com/Stelian1996/projects-folder

 

[dsonesuk]

Localstorage will do that. First you set a default value if localstorage does not currently store any value related to chosen font size, else load localstorage value and make the chosen font-size active on page load or refresh.

Then set onclick event to make selected fontsize active then at same set localstorage to store currently selected font-size also.

[Stelian]

I accidentally made another topic of this problem and In it I show my code with local storage. It works but it does  not save after reload. Link to the other topic