Wedjat Health Solutions Interview Questions and Answers

ES6 introduced several new features and improvements to JavaScript, making it more powerful and efficient.

• Arrow functions for more concise syntax

• Let and const for block-scoped variables

• Classes for easier object-oriented programming

• Template literals for easier string interpolation

• Default parameters and rest parameters for function arguments

• Destructuring assignment for easier data extraction

• Promises for asynchronous prog

Yes, let and const variables are hoisted but not initialized.

• let and const variables are hoisted to the top of their block scope, but they are not initialized until the actual line of code is executed.

• This means that you cannot access a let or const variable before it is declared in the code.

• For example, trying to access a let variable before it is declared will result in a ReferenceError.

Global context refers to the overall environment or setting in which something exists or operates.

• Global context encompasses all variables, functions, and objects that are accessible throughout an entire program.

• It can be thought of as the 'big picture' view of a program's execution.

• In web development, global context includes the window object in JavaScript.

Temporal dead zone is a period during the variable creation process where accessing the variable results in a ReferenceError.

• Occurs when trying to access a variable before it has been declared with let or const

• Happens due to the variable being in the temporal dead zone until it is declared

• Example: accessing a variable before its declaration will result in a ReferenceError

Modules in Node.js are reusable blocks of code that encapsulate related functionality.

• Modules in Node.js can be built-in modules like fs (file system) or third-party modules like express.

• Modules help in organizing code into separate files for better maintainability and reusability.

• Modules can be imported using the require() function in Node.js.

Indexes in MongoDB improve query performance by allowing the database to quickly locate and retrieve specific documents.

• Indexes help to speed up query performance by allowing the database to quickly locate specific documents based on the indexed fields.

• Without indexes, MongoDB would have to perform a collection scan, which can be slow and resource-intensive.

• Indexes can be created on single fields or compound fields to ...read more

Hooks are a feature in React that allow you to use state and other React features in functional components. useRef is a hook that allows you to create a mutable object that persists for the lifetime of the component.

• Hooks are used to add state and lifecycle methods to functional components in React

• useRef is used to create a mutable reference that persists between renders

• useRef can be used to access DOM elements directl

Mongoose is an Object Data Modeling (ODM) library for MongoDB that provides a higher level of abstraction and simplifies interactions with the database.

• Mongoose provides schema validation which helps maintain data integrity.

• Mongoose simplifies querying and data manipulation with built-in functions.

• Mongoose supports middleware functions for pre and post processing of data operations.

I have worked on projects involving website redesign, mobile app design, and user research.

• Redesigned company website to improve user experience and increase conversion rates

• Designed mobile app interface for seamless navigation and intuitive user interactions

• Conducted user research to gather feedback and make data-driven design decisions

My favorite apps are Instagram for its user-friendly interface and engaging content, Spotify for its personalized music recommendations, and Google Maps for its accurate navigation features.

• Instagram - user-friendly interface, engaging content

• Spotify - personalized music recommendations

• Google Maps - accurate navigation features

In 5 years, I see myself as a seasoned UI/UX designer leading a team of designers, working on innovative projects, and continuously learning and growing in the field.

• Leading a team of designers

• Working on innovative projects

• Continuously learning and growing in the field

Seeking new challenges and growth opportunities in a dynamic field.

• Interested in leveraging my skills and experience in a new environment

• Excited about the potential to work on innovative products

• Looking for opportunities to expand my knowledge and expertise

Yes, I frequently use food delivery apps like Swiggy.

• I use Swiggy at least a few times a week for ordering food.

• I appreciate the wide variety of restaurants and cuisines available on Swiggy.

• Improvement suggestion: Enhance the user interface for a smoother ordering experience.

• Improvement suggestion: Implement a more accurate delivery time estimation system.

• Improvement suggestion: Offer more personalized recommendations

Northstar metric is the key metric that drives the core value of a product. For Swiggy, the northstar metric could be Daily Active Users (DAU) or Orders per User.

• Northstar metric is the single metric that best captures the core value that your product delivers to customers.

• For Swiggy, the northstar metric could be Daily Active Users (DAU) as it represents the number of unique users who engage with the platform on a dai...read more

I worked on improving the adoption of a new feature by conducting user research, implementing user feedback, and creating targeted marketing campaigns.

• Conducted user research to understand user needs and preferences

• Implemented user feedback to make necessary improvements to the feature

• Created targeted marketing campaigns to promote the feature to the right audience