How to prevent the user from changing values in the HTML or the JavaScript

Question

I am trying to make a user can change they are changing profile text color and background color.

I created this DEMO from codepen.io

In this d

Answer 1

In the server-side code change_theme.php you should have two seperate arrays for textcolors and background colors.

change_theme($uid,$text-color,$background-color);

    }
?>

Hope this helps you.