Apponix Technologies Interview Questions and Answers

Filling position for a Banking Client

Q1. Past Experience
Add your answer
Q2. Work Timings
Add your answer

About my Personal, Educational & Family Background

Testing your java script skiils

Q1. Asked some question about react
Add your answer
Q2. What is virtual dom
Ans. 
Virtual DOM is a lightweight copy of the actual DOM that helps in efficient rendering of web pages.
• Virtual DOM is a concept used in ReactJS to improve performance.

• It is a lightweight copy of the actual DOM.

• Any changes made to the virtual DOM are first reflected in the virtual DOM and then in the actual DOM.

• This helps in reducing the number of updates required to the actual DOM, thus improving performance.

• ReactJS uses a...read more
Answered by AI
Add your answer
Q3. Whats is props ?
Ans. 
Props is a shorthand for properties in React that allows passing data from parent to child components.
• Props are read-only and cannot be modified by the child component.

• Props can be any data type, including functions and objects.

• Props can be passed down multiple levels of components.

• Props can have default values set using defaultProps.

• Props can be validated using propTypes to ensure correct data types are passed.

• Example
Answered by AI
Add your answer
Q4. What is states ?
Ans. 
States are objects in React that hold component data and can be updated using setState() method.
• States are used to manage component data that can change over time.

• They are defined in the constructor of a component.

• They can only be updated using the setState() method.

• Updating a state triggers a re-render of the component.

• States should not be modified directly, use setState() instead.
Answered by AI
Add your answer
Q5. Whats is propdrilling
Ans. 
Prop drilling is the process of passing props through multiple levels of components to reach a deeply nested component.
• It can lead to code redundancy and make it difficult to maintain.

• Context API and Redux can be used to avoid prop drilling.

• Example: Passing props from a parent component to a child component, then to another child component, and so on.

• Example: Passing a prop from App.js to a deeply nested component like...read more
Answered by AI
Add your answer
Q6. What is state management
Ans. 
State management is the process of managing and updating the data that determines a component's behavior and rendering.
• State is an object that holds data that can change over time

• State management involves updating state based on user interactions or other events

• State can be passed down to child components as props

• Popular state management libraries for React include Redux and MobX
Answered by AI
Add your answer

Q1. Discuss about Company
Add your answer