Intelizign Lifecycle Services Reactjs Developer Interview Questions, Process, and Tips

Q1. What About hooks
Add your answer
Q2. Hooks, Functional Components,
Add your answer

Q1. JavaScript callback?
Add your answer
Q2. What is useState?
Ans. 
useState is a hook in React that allows functional components to have state.
• useState is a built-in hook in React.

• It allows functional components to have state.

• It returns an array with two elements: the current state value and a function to update the state.

• The initial state can be passed as an argument to useState.

• The state can be of any data type, such as a string, number, boolean, or object.

• Example: const [count, set
Answered by AI
Add your answer
Q3. What is closure in JavaScript?
Ans. 
Closure is a feature in JavaScript that allows a function to access variables from its outer scope even after the function has finished executing.
• Closure is created when a function is defined inside another function.

• The inner function has access to the variables and parameters of the outer function.

• The inner function forms a closure with the outer function, preserving the state of the outer function's variables.

• Closure...read more
Answered by AI
Add your answer
Q4. JavaScript promise?
Add your answer
Q5. What are props in react?
Ans. 
Props are read-only properties that are passed from a parent component to a child component in React.
• Props allow data to be passed between components in a unidirectional flow.

• Props are immutable and cannot be modified by the child component.

• Props can be used to customize the behavior or appearance of a component.

• Props are accessed using the 'this.props' syntax in class components or as function arguments in functional
Answered by AI
Add your answer

It was an online test. The test was having 25 English questions and 25 coding MCQ questions. Test duration was 60 Mins

Q1. The first part of the interview contained questions related to my work experience.
Ans. I told the interviewer about what I had done in my past roles.
Answered Anonymously
Add your answer
Q2. After this interviewer gave me a Machine coding round kind of question. I had to display a list of products using the flexbox layout. Also, I had to create a sort button to sort the list and update the vie...read more
Ans. I used useState hook to capture product details. and updated the list using the sort function.
Answered Anonymously
Add your answer

Q1. Objective javascript questions
Add your answer

Q1. Delete duplicate element from array
Ans. 
Remove duplicate elements from an array of strings
• Create a new Set from the array to remove duplicates

• Convert the Set back to an array using the spread operator

• Alternatively, use filter() and indexOf() to remove duplicates
Answered by AI
Add your answer

Q1. About you family etc.
Add your answer

Q1. What are hooks in reactjs?
Ans. 
Hooks are a new feature in React 16.8 that allow you to use state and other React features without writing a class.
• Hooks are functions that let you use state and other React features in functional components.

• They allow you to reuse stateful logic without changing your component hierarchy.

• Some built-in hooks include useState, useEffect, useContext, etc.

• Hooks provide a more direct API to the React concepts you already kn...read more
Answered by AI
Add your answer
Q2. What is pure component?
Ans. 
Pure component is a class component that does not re-render if the input props and state remain the same.
• Pure components implement shouldComponentUpdate method with shallow prop and state comparison.

• They are optimized for performance as they prevent unnecessary re-renders.

• Example: class MyComponent extends React.PureComponent { // component code here }
Answered by AI
Add your answer
Q3. What is modules in javascript?
Ans. 
Modules in JavaScript are reusable pieces of code that can be exported from one file and imported into another.
• Modules help in organizing code into separate files for better maintainability.

• Modules can be imported using 'import' keyword and exported using 'export' keyword.

• Modules can be used to encapsulate code and prevent global namespace pollution.

• CommonJS and ES6 modules are two popular module systems in JavaScript.
Answered by AI
Add your answer
Q4. What is the difference between rem and em in css? How to hide something in CSS?
Ans. 
rem and em are both units in CSS for defining font sizes, with rem being relative to the root element and em being relative to the parent element.
• rem stands for 'root em' and is relative to the font size of the root element (usually the tag)

• em stands for 'element em' and is relative to the font size of the parent element

• To hide something in CSS, you can use the display property with a value of 'none' or the visibility...read more
Answered by AI
Add your answer

Q1. 1. What all hooks are available at react functional component 2.what is closure.
Ans. 
React functional components have access to various hooks like useState, useEffect, useContext, etc. Closure is a feature in JavaScript where a function has access to its outer function's scope.
• React hooks available in functional components include useState, useEffect, useContext, useReducer, useCallback, useMemo, useRef, useImperativeHandle, useLayoutEffect, and useDebugValue.

• useState is used to manage state in functio...read more
Answered by AI
Add your answer