Web Programming Frontend Frameworks and Tools 2

Question 1

In React, what is the useState hook used for?

Accepted Answer

Adding and managing local state in functional components

Answer

The useState hook allows functional components to declare and manage local state variables, returning the current state and a function to update it.

Question 2

What is the purpose of version control in web development?

Accepted Answer

To track changes to code over time and enable collaboration

Answer

Version control systems like Git track changes to source code over time, enable collaboration, allow rollback to previous states, and support branching workflows.

Question 3

What is TypeScript's primary advantage over plain JavaScript?

Accepted Answer

Static type checking that catches errors at compile time

Answer

TypeScript adds optional static typing to JavaScript, allowing type errors to be caught during development before the code runs in the browser.

Question 4

What is the purpose of ESLint in a web project?

Accepted Answer

To analyze JavaScript code for errors and enforce coding style rules

Answer

ESLint is a static code analysis tool that identifies problematic patterns in JavaScript code and enforces configurable coding standards.

Question 5

In Angular, what is a component decorator (@Component) used for?

Accepted Answer

To define metadata for an Angular component including its template and selector

Answer

The @Component decorator in Angular marks a class as a component and provides configuration metadata including the HTML template, CSS styles, and selector.

Web Programming Practice Test

Web Programming Practice Test

Web Programming Frontend Frameworks and Tools 2