Frontend

There are three nested elements: form, div, and p, each with a click event handler. What will happen when clicking on the div element?

What is a CORS preflight request and in which cases does the browser send it? When can a request be sent without preflight?

What disadvantages of Feature-Sliced Design have you seen or faced difficulties with during its implementation?

What is an asynchronous function and what does Promise return? What states does a Promise consist of?

Why are you looking for a developer for these projects?

[name] analyzes what will happen in the proposed JavaScript code with the 'this' context and how the result will change when adding 'use strict'?

Middle

Pyrus

What are the advantages of Feature-Sliced Design?

When should you use computed and when watch in Vue?

What is the difference between var, let, and const?

Explain how the Event Loop works in JavaScript: what parts it consists of, what phases it has, and what is the order of task execution?

Is the expression on the right of await executed synchronously or as a microtask? What happens to the code after await?

Were the tests written manually or did you use AI?

How to optimize large forms with many fields in React: reduce unnecessary re-renders and decrease coupling?

Implement the RLD (run-length decoding) function, which is the reverse of RLE: expand the compressed string by repeating each character the specified number of times; leave single characters unchanged.

Are you ready to move/ work in an office?

Middle

Бюро 1440

What will be printed to the console when executing code with two function declarations of A inside function f?

Implement an infinite iterator that returns a random integer from 0 to 100 on each call to next()

Middle

МТС Digital

If the microtask queue takes several seconds, what will happen to the click handler that outputs a message to the console? When will it execute?

Explain union and intersection types in TypeScript.

Create a hover effect: when hovering, the square turns blue, and when the cursor leaves, it returns to red.