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AI solution for React Quiz on BFE.dev
8. Suspense 2
The code will output the following by console.log:
App
A1
fallback
A2
B
Explanation:
- First, the component
App
is rendered and logs "App" to the console. App
contains two components wrapped in aSuspense
component,A
andB
.- When
App
is rendered,A
is also rendered, andA
callsresource.get()
. Sincestatus
is initially "pending",resource.get()
setsstatus
to "fetching" and throwsfetcher
. - The
Suspense
component catches the promise thrown byresource.get()
and renders theFallback
component, logging "fallback" to the console. - After 100ms, the
setTimeout
inresource.get()
resolves the promise and setsdata
to 1 andstatus
to "ready", causingA
to re-render and log "A2" and render a<p>
tag with "1". B
is then rendered and logs "B" to the console.