← ▲ Next.js Foundations14 / 25
Lesson 14 — Derived values
Compute, do not store
Derive counts from data during render.
Task
Show completed todo count.
Keep going with Next.js Foundations
Ready for more? These paid resources pick up where this lesson leaves off.
UdemyBestsellers
Top-rated Next.js Foundations courses
Project-based Next.js Foundations video courses — the perfect paid next step after these free lessons.
Browse on Udemy →AmazonReader picks
Best Next.js Foundations books
Hand-picked Next.js Foundations books to master the fundamentals offline.
See on Amazon →Some links on this page are affiliate links: we may earn a commission at no extra cost to you. We only recommend tools we believe are genuinely useful.