“Usememo” Code-Antworten

Usememo

const memoizedResult = useMemo(() => {
  return expensiveFunction(propA, propB);
}, [propA, propB]);
Inexpensive Ibex

Usememo

/*
Pass a “create” function and an array of dependencies. 
useMemo will only recompute the memoized value when one 
of the dependencies has changed. This optimization helps 
to avoid expensive calculations on every render.
*/
const memoizedValue = useMemo(() => computeExpensiveValue(a, b), [a, b]);
Poised Puffin

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