Naviga Senior Developer Interview Questions and Answers

Async JavaScript allows for non-blocking code execution, improving performance by handling multiple tasks simultaneously.

• Async JavaScript uses callbacks, promises, and async/await to handle asynchronous operations.

• It allows for tasks like fetching data from a server or updating the UI without blocking the main thread.

• Example: Using setTimeout to simulate async behavior in JavaScript.

Yes, I am familiar with WordPress and have experience in developing websites using it.

• I have worked on creating custom themes and plugins for WordPress.

• I am proficient in using WordPress CMS to manage content and customize websites.

• I have experience in optimizing WordPress websites for performance and SEO.

• I am familiar with popular WordPress plugins like Yoast SEO, WooCommerce, and Contact Form 7.

Lazy loading is a technique used in software development to defer the loading of resources until they are actually needed.

• Lazy loading improves performance by only loading resources when necessary

• It is commonly used in web development to load images or data as the user scrolls down a page

• Lazy loading can also be used in programming languages to load classes or modules on-demand

Authentication is the process of verifying the identity of a user, while authorization determines what resources a user can access.

• Authentication is the process of verifying the identity of a user.

• Authorization determines what resources a user can access.

• In Node.js, authentication and authorization can be implemented using various libraries and techniques such as Passport.js, JSON Web Tokens (JWT), and role-based acces...read more

String is immutable, while StringBuilder is mutable and more efficient for concatenating strings.

• String is immutable, meaning once created, its value cannot be changed. StringBuilder is mutable, allowing for modifications without creating new objects.

• String concatenation creates a new string object each time, while StringBuilder modifies the existing object directly.

• StringBuilder is more efficient for concatenating mul...read more

Async and await are keywords in JavaScript used to work with asynchronous code.

• Async is used to define a function as asynchronous, allowing it to run in the background without blocking the main thread.

• Await is used to pause the execution of an async function until a Promise is settled, and then resumes the function with the resolved value.

• Async/await is a more readable and cleaner way to write asynchronous code compare...read more