Frontend

What will be output to the console (example 42)

Junior — Senior

Яндекс

Review and correction of React component: correct use of useLayoutEffect and useCallback

Junior — Senior

Альфа-Банк

Improving React component performance

Junior — Senior

Т-Банк

Detect and fix an error in a Vue component

Creating your own EventEmitter class

Junior — Senior

Яндекс

Identifying components that re-render when a button is clicked in React

Junior — Senior

Т-Банк

Correct typing of the map function in TypeScript

Create your own checkbox with emoji

Merging two arrays without using concat()

Display of entered text from input fields

Junior — Senior

Альфа-Банк

Function that generates a random HEX color

What will be displayed in the console when executing example №92

Creating a function that returns a Promise instead of a callback

Junior — Senior

Яндекс

Optimization and refactoring of a React component

Junior — Senior

Альфа-Банк

Function that extracts the extension from a filename

Creating a simple timer in React with start and stop buttons

Creating a spy wrapper for any function

Junior — Senior

Яндекс

Creating a polyfill for the Array.some() method

Junior — Middle+

Альфа-Банк

Order of message output to the console in JavaScript (example 101)

Junior — Senior

Т-Банк

Detect and fix bugs in a React component

Junior — Senior

Альфа-Банк