What happens when you access a variable before its declaration in cases of var and let? What is the difference?
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118
Frontend
6388
681
What is the difference between useCallback and useMemo?
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113
Tell me about your testing experience: unit tests, integration tests, Playwright.
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111
What mechanics and method of parsing Excel files did you use in Web Worker? What exactly happened during the upload?
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110
How to work with asynchronous JavaScript? How does async/await differ from promises?
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109
Have you had experience working with tasks that lacked system or business requirements?
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105
What are the rules for using hooks in React?
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100
Have you worked with bundlers like Vite and Webpack? Have you ever configured Webpack and for what purpose?
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93
What are the strategies for making changes and merging branches in Git?
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83
What is a pure function? Would a function be pure if it changes the passed arguments and returns them?
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80
Have you used rebase and can you explain how it works?
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75
In what ways can you write asynchronous code in JavaScript: with Promise, async/await, and without Promise?
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75
If the server returns data of the wrong type, for example a string instead of a number, when will you detect this and how will you handle it?
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74
What are generics in TypeScript?
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44