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

470

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Why do we need a router in react?

448

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What is SyntheticEvent?

417

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What is the difference between npm & npx?

519

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Explain the term high order component

432

---

Explain synthetic event in React js?

440

---

Explain the components of Redux?

454

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What is PureComponent? When to use PureComponent over Component?

492

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

430

---

Explain dom diffing?

420

---

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

488

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How the interpreter is used in Perl?

993

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What is use of ‘->’ symbol?

1063

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How can memory be managed in Perl?

1122

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How can information be put into hashes?

1032

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