Measure and improve frontend performance without breaking behaviour
Record device, network, route and data availability before comparing scores. Reserve image space and test long text and delayed assets across breakpoints.
LEARN COURSES
Compare the outcomes, teaching sequence and practical projects for each course. Enrolment opens as teaching materials become available.
5 course plans
Record device, network, route and data availability before comparing scores. Reserve image space and test long text and delayed assets across breakpoints.
Define stable IDs, units, provenance and observation versus collection time. Map a public or invented feed with duplicate rules and explicit invalid records.
Define which routes need indexable HTML and which require a signed-in application. Build route-specific titles, canonical URLs and article content that remain present before JavaScript runs.
Reproduce two workers taking the same task and replace check-then-set with an atomic claim. Test UTC storage, local display, daylight-saving transitions and calendar recurrence.
Write an interaction brief that makes a relationship inspectable without promising a simulation proves reality. Implement deterministic state and visible assumptions in a small browser prototype.