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React has three main phases in its lifecycle: mounting, updating, and unmounting.
Mounting: when a component is created and inserted into the DOM
Updating: when a component is updated due to changes in props or state
Unmounting: when a component is removed from the DOM
Lifecycle methods can be used to perform actions at each phase, such as componentDidMount() or componentWillUnmount()
React also has error handling methods,
Strict mode is a way to write secure and optimized JavaScript code.
Enables catching of silent errors
Disallows duplicate property names or parameters
Prevents use of undeclared variables
Makes `eval()` safer to use
Throws errors on invalid usage of `this` keyword
CURD operations along with implementation of a mock UI
OOPs concepts are fundamental principles in object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the complex imple...
I applied via Naukri.com and was interviewed before Jan 2023. There were 3 interview rounds.
FInd 3 numbers in an array whose sum = k.
Design an Elevator system for efficient vertical transportation
Consider the number of floors in the building
Implement a scheduling algorithm to optimize elevator movement
Include safety features such as emergency stop button
Allow for both manual and automatic operation
Consider peak hours and traffic flow in the building
I applied via Recruitment Consulltant and was interviewed in Jul 2024. There were 2 interview rounds.
Hoisting is a JavaScript behavior where variable and function declarations are moved to the top of their containing scope during compilation.
Variable declarations are hoisted to the top of their scope, but not their initializations.
Function declarations are fully hoisted, including their definitions.
Hoisting can lead to unexpected behavior if not understood properly.
Arrow functions are a concise way to write functions in JavaScript.
Arrow functions are anonymous functions defined using the '=>' syntax.
They have a shorter syntax compared to traditional function expressions.
Arrow functions do not have their own 'this' keyword, instead they inherit it from the parent scope.
Polyfill of Promise is a code that adds Promise functionality to browsers that do not support it natively.
Polyfill is a piece of code that provides the technology that you expect the browser to provide natively.
Polyfill for Promise adds Promise functionality to browsers that do not support it, allowing developers to use Promises in their code.
Examples of Promise polyfills include 'es6-promise' and 'promise-polyfill'.
Implementing a carousel for displaying multiple images or content in a rotating manner.
Use a library like Slick or Owl Carousel for easy implementation
Ensure images/content are responsive for different screen sizes
Add navigation arrows or dots for user interaction
Consider adding autoplay feature with customizable speed
Optimize performance by lazy loading images
I applied via Naukri.com
I applied via Company Website and was interviewed in Jan 2024. There was 1 interview round.
Some of the top questions asked at the Azuga Telematics interview for freshers -
The duration of Azuga Telematics interview process can vary, but typically it takes about less than 2 weeks to complete.
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