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

438

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Why do we need a router in react?

418

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What is SyntheticEvent?

389

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What is the difference between npm & npx?

483

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Explain the term high order component

388

---

Explain synthetic event in React js?

410

---

Explain the components of Redux?

428

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What is PureComponent? When to use PureComponent over Component?

461

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

394

---

Explain dom diffing?

394

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

454

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How the interpreter is used in Perl?

961

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What is use of ‘->’ symbol?

1025

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How can memory be managed in Perl?

1072

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How can information be put into hashes?

985

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