In class components, there is a method componentWillUnmount. How to implement an equivalent in a functional component?
Middle
219
Frontend
6282
681
JavaScript classes are syntactic sugar over what?
Middle
205
Tell me about your experience: where you worked, what you did, what stack you used.
Middle
198
Tell me about the principles of OOP: inheritance, polymorphism, encapsulation, abstraction.
Middle
187
Task #4: implement a function according to its TypeScript types (the function takes an object and a key of this object, returns the value by the key).
Middle
183
There is a task to move an element on the page. Two ways: through position + left/top or through transform. Which method is preferable and why?
Middle
175
How does the browser render the page after receiving HTML, CSS, and JS?
Middle
174
What is useCallback, what does it do, and when should it be used?
Middle+
171
Why do you think about leaving your current job?
Senior
168
Order the sequence of console.log calls: arrange the order of log outputs (part 1 — synchronous code, part 2 — with asynchronous code, promises, and setTimeout).
Middle
162
How to resolve the style conflict issue between two micro frontends using different versions of the design system? How to address CSS specificity?
Middle+
160
How do arrow functions differ from regular functions in the context of working with this?
Middle+
160
Are class components still needed in React? Is there something that can be done in class components but not in functional ones?
Middle
159
What is cross-browser compatibility and how to solve CSS compatibility issues between browsers?
Middle+
159
Do you understand how databases and APIs work, and how data circulates between components?
Senior
157
How much time is required to start a new project?
Senior
154
[name] is willing to consider a cooperation format through the vendor (Glassport Global)?
Senior
153
What is the difference between useEffect and useLayoutEffect? When should useLayoutEffect be used?
Middle+
152
Tell me more about micro frontends: which framework, how was the architecture designed?
Middle
147
How interested are you in product development, or are you more interested in DevX, configuration, and platform tasks?
Middle+
145