elements.forEach(element => { element.style.width = '300px'; console.log( element.getBoundingClientRect().width ); }); // [link] export default () => { return <div>Hello!</div> }
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Frontend
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Were there any cases where something crashed in production or during testing of WebSocket connection implementations?
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Your resume states that you have worked extensively with complex multi-step forms. Can you tell us more about what was implemented there?
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Second task: implement a search component using a standard server via query parameter — create an input for query entry, states for results and query, fetch data in useEffect with error handling and loading state, render a list of results (name field).
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How was cross-field validation (validation of one field depending on the value of another) technically implemented?
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Can you calculate the algorithmic complexity of the implemented status filtering?
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You mentioned testing for a thousand connections via WebSocket — how did you test this, how did the load testing go?
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If we talk about pure optimization techniques within React, which ones are you familiar with? (useMemo, useCallback, React.memo)
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What state managers have you worked with? Which do you prefer, and what are their advantages and disadvantages?
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Tell us about your experience working with tables (drawing, working with large data volumes).
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Addition: add filtering of results by the status field through a separate text input, considering case insensitivity.
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Have you worked with authorization? Tell us more about the implementation.
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What did the table you developed look like? What had to be implemented by yourself?
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Have you had to work with new React hooks (18/19), such as useTransition, useDeferredValue?
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How was the update of access/refresh tokens implemented during JWT authorization (interceptors, handling 401)?
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Theoretically speaking: there are large tables with a lot of data. Can performance issues arise? If yes, how would you solve them?
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Have you heard of the useLayoutEffect hook? Explain how it works.
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Do you understand how Zustand works under the hood?
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