Frontend

Custom class for event handling

What will appear in the console? (example 71)

Junior — Senior

Промсвязьбанк

Determining variable values after destructuring assignment

Creating your own map method

Junior — Senior

X5 tech

Getting a value by a nested path in an object

Creating a string concatenation function with a separator

Intern — Senior

Яндекс

Correctly type the component passed to the container

Junior — Senior

СБЕР

Counting all integer elements in a nested array

Designing the hotel booking page interface

Junior — Senior

2gis

Determine which output will appear in the console for code #103

Determine the correct type for the variable MYType

Junior — Senior

СБЕР

Determining the order of output to the console (example 60)

Custom useFetch hook

What will the browser display during infinite text update of an element

Junior — Senior

Учи.ру

Transforming URL query parameters into a nested object

Creating your own filtering method for arrays

Getting the property value of an object

Restoring the context object after losing this

Inefficient useCallback in React component

Creating your own massive filter method