Zidio Development Interview Questions and Answers

JavaScript files typically use the .js extension, indicating they contain JavaScript code for web development.

• The .js extension is standard for JavaScript files, e.g., 'script.js'.

• JavaScript can be embedded directly in HTML using <script> tags.

• Other related extensions include .mjs for ES modules and .jsx for React components.

In JavaScript, comments are used to annotate code and improve readability without affecting execution.

• // This is a single-line comment

• /* This is a multi-line comment */

• // Comments can explain code logic or disable code execution

URL stands for Uniform Resource Locator, a reference to a web resource that specifies its location on a computer network.

• A URL is used to access web pages, e.g., https://www.example.com.

• It consists of several components: protocol (https), domain (example.com), and path (/page).

• URLs can also include query parameters, e.g., https://www.example.com/search?q=keyword.

• They are essential for web navigation and linking re...read more

A tech stack for interactive web pages typically includes HTML, CSS, JavaScript, and frameworks like React or Angular.

• HTML: Structure of the web page, e.g., <div>, <header>, <footer>.

• CSS: Styling the web page, e.g., Flexbox, Grid layout.

• JavaScript: Adds interactivity, e.g., DOM manipulation, event handling.

• Frameworks: React for component-based architecture, Angular for robust applications.

• Librari...read more

An API (Application Programming Interface) allows different software applications to communicate and interact with each other.

• APIs enable data exchange between systems, like a weather app fetching data from a weather service.

• They can be RESTful or SOAP, with REST being more common for web services.

• APIs can be public (open to everyone) or private (restricted to certain users).

• Examples include social media APIs (lik...read more

JavaScript enhances website functionality, enabling interactivity, dynamic content, and improved user experience.

• Enables dynamic content updates without page reloads (e.g., AJAX calls).

• Facilitates user interaction through events (e.g., button clicks triggering actions).

• Allows for form validation before submission (e.g., checking required fields).

• Enhances animations and visual effects (e.g., fading elements in and ...read more

A structured approach to building a website ensures clarity, usability, and maintainability.

• Define the purpose and goals of the website (e.g., e-commerce, portfolio).

• Create a sitemap to outline the structure and hierarchy of pages.

• Design wireframes for key pages to visualize layout and functionality.

• Choose a tech stack (e.g., HTML, CSS, JavaScript frameworks) based on project needs.

• Implement responsive design to e...read more

Bcrypt.js is a JavaScript library for hashing passwords securely using the Bcrypt algorithm.

• Bcrypt is designed to be slow, making brute-force attacks more difficult.

• It incorporates a salt to protect against rainbow table attacks.

• The cost factor can be adjusted to increase hashing time as hardware improves.

• Example usage: bcrypt.hash('password', saltRounds, function(err, hash) { ... });

• Bcrypt is widely used in Node....read more