Engrain by ByteRush

MC.06.01 Mid-levelCore — asked often

Kanban: build

Comes up in: Machine coding

This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.

What it covers

  • normalised state (columns → card ids, cards by id)
  • add/edit/delete cards
  • drag-and-drop (HTML5 DnD vs pointer events)
  • persistence

Words you will know

normalised statedrag and drop

What you will practise

  • build (timed 90 min)

Interview questions this answers

  • How would you structure the state for a kanban board?
  • How do you make drag-and-drop accessible?
  • How do you store card order so reordering does not rewrite every row?
  • Two users move the same card at once. What happens?