1point1 Solutions Front end Developer Interview Questions and Answers

Q1. Mostly questions from Domain, JavaScript, Like output based questions of objects, their memory location, reference, one DSA question from recursion, output based questions mostly
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Coding test was the first round of interview

Q1. What is virtual dom in react and what makes it faster ?
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in React, allowing for efficient updates and rendering.
• Virtual DOM is a representation of the actual DOM in memory.

• React compares the virtual DOM with the actual DOM to identify changes.

• Only the differences between the virtual and actual DOM are updated, making it faster.

• Example: When a user interacts with a React component, the virtual DOM is updated first before the
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Q1. It was HR round
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2 DSA questions. Both medium level difficult

What was the coding test,what is the use of the testing in development.

How to the update project,how to the sales the projects

Software development and process

10 day,Numbers,Alebra

Q1. Oop,C++.html,css,javascrept
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Q2. What is order list
Ans. 
An ordered collection of items, typically displayed in a numbered list.
• Order list is used to display items in a specific sequence.

• Items in an order list are typically numbered or marked with bullets.

• Example:

  1. Item 1
  2. Item 2
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Q3. What is javascript
Ans. 
JavaScript is a high-level, interpreted programming language used for creating interactive websites.
• JavaScript is commonly used for client-side web development.

• It can be used to add interactivity to websites, such as form validation or dynamic content.

• JavaScript can also be used for server-side development with Node.js.

• Examples of JavaScript frameworks/libraries include React, Angular, and Vue.
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Q4. What is ===operator
Ans. 
=== operator is a strict equality operator in JavaScript that checks if two values are equal in both value and type.
• === operator returns true if both operands are of the same type and have the same value

• It does not perform type coercion, unlike the == operator

• Example: 5 === '5' will return false because the operands are of different types
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Q5. What is the main features of oop
Ans. 
Main features of OOP include encapsulation, inheritance, and polymorphism.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Ability to create new classes based on existing classes, inheriting their attributes and methods.

• Polymorphism: Ability for objects of different classes to respond to the same message in different ways.

• Example: Encapsulation - a class 'Car' wi...read more
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