Is it safe to use JavaScript for permissions?
You can’t use JavaScript for anything related to permissions or security: Users can simply open the browser console and edit your JavaScript. So this approach is a no-go (well, unless you don’t care at all).
How to manage web-application permission policies with JavaScript?
One solution which lies on the surface is to build a global JS object on page load (or with separate AJAX request) and store the user groups there. And then use conditions in the code to verify the current group and allow or restrict a specific functionality. A simplified example would look something like this:
Do you need backend to check permissions in JavaScript?
Ideally, you don’t only rely on the frontend to check permissions. Someone experienced with web technologies could still send a request without UI to the server with the intent to manipulate data, hence your backend should be checking things as well.
When to return true or false for user permissions?
Since the same user might have different permissions in different files, we always need to provide that argument. As for the second argument, we pass an action, like deleting the file. The function should then return a boolean true if the currently logged-in user has permissions for that action, or false if not.
Where do I find the permissions on my account?
In Account Navigation, click the Permissions link. By default, the permissions page displays course-level user role permissions [1]. To view account-level user role permissions, click the Account Roles tab [2].
How do I manage the permissions page?
Choose the new permission status by clicking one of the permission options: Enable or Disable. After you enable or disable the permission, you can choose to lock the permission status. To lock the permission status, click the Lock option [3]. Locked options keep the setting from being changed by subaccount admins in a lower account.