Frontend

What is the difference between logical OR (||) and the null-coalescing operator (??)?

What are null and undefined, and what is the difference? What will typeof null return?

There is an object, some of whose values are functions. How to make a deep copy of it? Are there any difficulties?

Do you know anything about acquiring? What is it?

Practical task on Promise (the task was announced but not fully disclosed in the transcript).

Explain what Virtual DOM is in React.

Tell about your commercial experience and the technology stack you have worked with.

How is state stored in React? What state managers have you used?

Explain the concept of closure.

Are there any questions about the team's work processes?

Are you familiar with Feature-Sliced Design? What is it and how is its structure organized?

// create a function to wait 1000 with passing control outside // parameterize

Tell me more about the [company] project: stack, tasks, what did you do?

Tell me about Git. What is GitFlow? How was it used in the project?

Implement a component for delaying click processing, i.e., debounce.

What is the difference between interface and type in TypeScript? What happens if you declare two interfaces with the same name?

Was there a case when your mistake caused a rework that fully or partially broke the product? What conclusions did you draw?

What are the most dangerous mistakes when working with hooks?

What is a side effect?

How to work with asynchronous JavaScript? What is the difference between Promise and async/await?