Does React re-render all components and sub components every time setState is called?

473

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Why do we need a router in react?

450

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What is SyntheticEvent?

418

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What is the difference between npm & npx?

522

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Explain the term high order component

434

---

Explain synthetic event in React js?

445

---

Explain the components of Redux?

457

---

What is PureComponent? When to use PureComponent over Component?

494

---

Is it possible to nest jsx elements into other jsx elements?

432

---

Explain dom diffing?

423

---

what is the usage of refs and keys used in react?

493

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How the interpreter is used in Perl?

994

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What is use of ‘->’ symbol?

1066

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How can memory be managed in Perl?

1122

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How can information be put into hashes?

1034

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