FreshersNow UI UX Developer Interview Questions and Answers

Q1. API call and thunk
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Q1. State and Props
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Q1. Design Accessibility
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Q2. Design principles
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Javascript array questions like palindrom and others with aptitude

Q1. Skill related technical questions
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Q2. How to share data in components react
Ans. 
Data can be shared between components in React using props, context, or state management libraries like Redux.
• Use props to pass data from parent to child components

• Use context to share data across multiple components without passing props manually

• Use state management libraries like Redux to manage global state and share data between components
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Q3. Prop drilling explain in react
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Prop drilling is the process of passing data through multiple levels of components in React.
• Prop drilling occurs when a component needs to pass data to a deeply nested child component.

• It can lead to code that is hard to maintain and understand.

• One way to avoid prop drilling is by using Context API or Redux for state management.
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Q4. Redux flow explain
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Redux is a predictable state container for JavaScript apps.
• Redux stores the entire state of an application in a single immutable object.

• State changes are made by dispatching actions, which are plain JavaScript objects.

• Reducers specify how the application's state changes in response to actions.

• Redux flow: Action -> Reducer -> Store -> View
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Q1. Previous project discussion
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Q1. What are states and props in React?
Ans. 
States and props are important concepts in React for managing and passing data between components.
• States are mutable data that can be changed within a component

• Props are read-only data passed from parent to child components

• States are managed within a component using setState() method

• Props are accessed using this.props in a component
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Q2. What is Virtual DOM
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Virtual DOM is a lightweight copy of the actual DOM that allows for efficient updates and rendering in web applications.
• Virtual DOM is a concept used in frameworks like React to improve performance by minimizing direct manipulation of the actual DOM.

• When changes are made to the virtual DOM, a comparison is done with the actual DOM to determine the minimal updates needed for rendering.

• This process helps reduce the numbe...read more
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Q3. Build a fetch and filter component
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A fetch and filter component for data retrieval and manipulation
• Use fetch API to retrieve data from an API endpoint

• Implement a filter function to manipulate the retrieved data based on user input

• Display the filtered data in the UI
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Javascript and React snippets

Q1. What is the closure in JS?
Ans. 
Closure in JS is a function that retains access to variables from its parent scope even after the parent function has finished executing.
• Closure allows functions to have access to variables from an outer function even after the outer function has finished executing.

• It is created whenever a function is defined within another function, and the inner function has access to the outer function's variables.

• Closures are commo...read more
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Q2. Explain about web worker ?
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Web workers allow running JavaScript code in the background without blocking the main thread.
• Web workers are separate JavaScript files that run in the background.

• They allow for multi-threading in web applications.

• Web workers can perform tasks like heavy calculations or network requests without affecting the main UI thread.

• Communication between web workers and the main thread is done through message passing.
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Q3. How to pass props in React
Ans. 
Props in React are passed from parent components to child components to share data and functionality.
• Props are passed as attributes in JSX when rendering a component

• Props can be accessed in the child component using 'this.props'

• Props are read-only and should not be modified directly
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Q1. What is react and it's advantage
Ans. 
React is a JavaScript library for building user interfaces.
• React allows for the creation of reusable UI components

• It uses a virtual DOM for efficient rendering

• React is declarative, making it easier to understand and debug code
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Q2. React life cycle
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Q3. Questions related to Redux
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Q4. Simple app using redux
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Creating a simple app using Redux for state management in a front end application.
• Set up Redux store with reducers and actions

• Connect components to Redux store using mapStateToProps and mapDispatchToProps

• Dispatch actions to update state in Redux store

• Use combineReducers to manage multiple reducers
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Q1. Previous project
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Q2. Agile process followed in project
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Agile process involves iterative development, frequent collaboration, and adaptability to changes.
• Daily stand-up meetings to discuss progress and roadblocks

• Sprints for focused development and testing

• Continuous feedback and iteration based on user input

• Use of tools like Jira or Trello for project management
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Q1. Salary discussion
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Q2. Work location discussion
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What is your name
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Qualification
Family background
Hobbies
Weekness strength
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Mathematics,communication skills,

Q1. Self introduction
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Q2. My name is mounika
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Q3. I caming form narasaraopet,palnadu district
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Q4. Caming to my familybackground we have 4 members My mother name is pravathi My father name is narasi reddy I have one sister she studying b.tech 3rd year My father is a farmer My mother is farmer
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Q5. My hobbies are reading books, movies, playing kho kho no weakness My goal is to became a software engineer
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Q1. Based on html,css Javascript
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Q2. Based on ReactJs
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Q3. Javascript promise method
Ans. 
JavaScript Promise is an object representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations such as fetching data from an API.

• They have three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() and .catch() methods.

• Promises can also be created using the Promise constructor.
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Q4. Javascript callback funtions
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Based on html, Css, Javascript and React-Js