What approaches to writing styles have you used (preprocessors, Tailwind, CSS modules, etc.)?
Middle
150
Frontend
6436
681
How is algorithmic complexity written? What is the complexity of bubble sort? What is the complexity of quicksort?
Middle
148
What are the methods of optimization for re-renders in React (React.memo, useCallback, useMemo)?
Middle
147
What is HTTP? Which HTTP methods do you know and what are they used for?
Middle
145
Why is a state manager needed? How does it differ from React Context?
Middle
144
What methods exist for creating a deep copy of an object?
Middle
142
Tell us about the most interesting task from your last or previous job — what influenced you in terms of interest or business impact?
Middle
141
What is a virtual DOM? Why is it needed? What are the three conditions of the tree comparison algorithm (diffing)?
Middle
137
Why can't Promise be completely replaced by async/await? In what situations is async/await not suitable?
Middle
137
What is the difference between the async and defer attributes in the script tag?
137
CSS selector specificity: which styles will be applied to two H2 tags with conflicting styles? Arrange the selectors in order of increasing specificity.
Middle
135
Is it possible to make finally execute again (with the number 10), without changing the code order, but by adding something inside the function?
Middle
134
What UI component libraries have you used?
Middle
133
What characterizes recursive algorithms in terms of performance?
Middle
132
Tell me about the Event Loop: call stack, microtasks, macrotasks.
Middle
131
What happens when you enter a URL in a browser and press Enter? Describe the entire process from DNS resolution to page rendering.
Middle
126
What HTTP response codes do you know?
Middle
118
Determine the order of output of digits in the console for the Promise example where reject is called, and then handlers then, catch, finally are attached.
Middle
114