Education platform for interview prep, online tests, tutorials, and live practice

Build skills with focused learning paths, mock tests, and interview-ready content.

WithoutBook brings subject-wise interview questions, online practice tests, tutorials, and comparison guides into one responsive learning workspace.

Search the library

Prepare Interview

Angular 8 Interview Questions and Answers

← Previous
Next →

Question: Explain the purpose of zone.js in Angular.

Answer: Zone.js is a library that helps Angular with change detection. It provides a context for JavaScript execution and allows Angular to know when asynchronous operations, such as HTTP requests or timers, are completed. This knowledge triggers the change detection process.

Example:

import 'zone.js/dist/zone';

Save For Revision

Bookmark this item, mark it difficult, or place it in a revision set.

Open My Learning Library

Is it helpful? Yes No

Most helpful rated by users:

Explain Angular modules.