Frontend

What did you use before the appearance of Promise?

What is the architectural pattern MVVM?

What are templates and string literals in JavaScript?

What methods can be used to optimize loading external resources on a web page?

What is the difference between HTML and XHTML?

What is the essence of encapsulation?

What is IIFE (Immediately Invoked Function Expression)?

Where exactly are session data stored and how does the server match specific session data with a particular HTTP request?

How does Angular work?

What is HMAC and in what cases is it used?

Tell about optimization of rendering in React.

How are HTML, CSS, and JavaScript related to each other?

What is force layout and what are its disadvantages?

What is progressive rendering?

What is the difference between status codes 400 and 500?

Tell about the components in React.

What tools and technologies are necessary to implement layered architecture or domain-driven design, and why are they needed?

What pitfalls can arise when optimizing CSS performance?

What are secure cookies?

What is the difference between host objects and native objects in JavaScript?