2023-08-03 · Example

Build a Kanban board with native drag and drop

Columns, cards, and persistence in one small example you can copy.

Introduction

A from-scratch example using HTML5 drag events and localStorage, plus the pointer quirks that bite you on touch devices.

The mental model

  • Start from the smallest version that could work, and make it observable.
  • Write down the trade-off you are accepting, not only the feature you are shipping.
  • Revisit the decision when the team grows; most choices in Example have a shelf life.

A practical starting point

  1. Reproduce the situation on a scratch branch, next to a measurement you trust.
  2. Change one variable at a time, and keep the diff small enough to explain in one sentence.
  3. Keep the result, throw away the scaffolding.
Terminal window
git switch -c experiment/one-thing

Closing thoughts

None of this is doctrine. Treat it as a checklist you are allowed to disagree with — ideally with an experiment of your own that settles the argument.