Make the Project Ready to Keep

Finish with a small cleanup pass rather than adding more functionality.

Check app.js for:

• repeated selectors that could be stored once
• unused variables or temporary debugging statements
• duplicated code that is no longer necessary
• comments that describe obvious JavaScript instead of useful decisions
• functions that have more than one unrelated responsibility

Then test the project one final time from a fresh page load.

Keep the existing HTML and CSS structure unless you need to fix a real issue. The course is about JavaScript application behavior, so avoid turning the final lesson into a redesign.

Final checkpoint

The project should:

• display the Kanban board
• create tasks
• delete tasks
• move tasks between columns
• highlight the current drop zone while dragging
• keep column counts synchronized
• persist changes across refreshes

You have now completed the Vanilla JavaScript version of the Kanban Task Manager.