How was A/B testing organized on the frontend: how was the group determined and the interface chosen?
Middle
120
Frontend
6982
681
Have there been performance issues in the application and how did you solve them?
Middle
119
What is ControlValueAccessor, what is it used for, and how does it work?
Middle
117
Is it possible to make so that this in an arrow function is undefined, for example by running the code in an isolated environment or strict mode? What does strict mode do?
Middle+
117
[name] asked: what is CORS?
Middle
116
What engine is used in Google Chrome?
Middle+
115
When does requestAnimationFrame execute in relation to the Event Loop and rendering?
Middle+
115
How to check if a module is loaded lazily?
Middle
112
What are the ways to store tokens on the frontend — cookies, localStorage, sessionStorage? Which are preferable and why?
Middle
111
How to type the component props: using type or interface?
Middle+
111
[name] asked: Which of these projects was the most recent?
Middle+
111
What are Higher-Order Components (HOC)?
Middle
111
Is it necessary to store offline messages, drafts, and other data on the client?
Middle+
110
With what should React.lazy be used?
Middle+
109
How to type an empty object so that it always remains an empty object?
Middle+
109
[name] asked: what is your experience with flexible development methodologies, in particular Scrum? Was there a Scrum Master in your team?
Middle
109
Determine the order of output in console.log for the given JavaScript code fragment with Promise and setTimeout.
Middle
108
What is a context in general and how do you understand it?
Middle+
108
[name] asked: how is your development process organized?
Middle
108
Which command should be used to install dependencies when package-lock.json is present and should this file be committed?
Middle+
107