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Coding test duration 40 min topic is frontend developer design the web pages by using the html,css and javascript.pefjilqrbfljkpkobnocec krgvk 2ktkgnpkognne fnjgnojvn
Answers to various questions related to web design and frontend development.
Tags are HTML elements used to define the structure and content of a web page.
HTML stands for Hypertext Markup Language and CSS stands for Cascading Style Sheets.
A frontend developer is responsible for designing and implementing the user interface of a website.
Web pages can be designed using HTML and CSS, with the latter used to style the page.
...
There are several ways to create a web page. HTML tags are used to structure content, while CSS attributes are used to style it.
Types of web pages include static, dynamic, and responsive.
HTML tags include headings, paragraphs, images, links, and more.
CSS attributes include color, font-size, margin, padding, and more.
HTML and CSS work together to create visually appealing and functional web pages.
posted on 20 Jun 2024
I applied via Naukri.com and was interviewed in Dec 2023. There were 2 interview rounds.
A pure function is a function that always produces the same output for the same input and has no side effects.
Always returns the same output for the same input
Does not modify any external state or variables
No side effects, such as network requests or console logs
Easier to test and reason about
Redux is a predictable state container for JavaScript apps.
Redux is a state management tool commonly used with React.
It helps in managing the state of an application in a predictable way.
Redux stores the state of the application in a single immutable state tree.
Actions are dispatched to update the state, and reducers specify how the state changes in response to actions.
Example: const initialState = { count: 0 }; const ...
Data can be sent from child to parent component in React by using callback functions.
Use callback functions to pass data from child to parent component
Define a function in the parent component and pass it as a prop to the child component
Call the function in the child component with the data as an argument
Closure is the combination of a function bundled together with references to its surrounding state.
Closure allows a function to access variables from its outer scope even after the outer function has finished executing.
It helps in maintaining state in functional programming.
Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(outerVar); }; }
posted on 22 Aug 2023
I applied via Naukri.com and was interviewed in Jul 2023. There were 2 interview rounds.
MCQ question for frontend
posted on 10 Dec 2024
I applied via Approached by Company and was interviewed in Nov 2024. There were 2 interview rounds.
Virtual DOM is a lightweight copy of the actual DOM, React key features include component-based architecture, declarative syntax, and virtual DOM, React Hooks are functions that let you use state and other React features without writing a class.
Virtual DOM is a lightweight copy of the actual DOM that React uses to improve performance by updating only the necessary parts of the DOM.
Key features of React include componen...
I applied via Naukri.com and was interviewed in Aug 2024. There were 2 interview rounds.
Online Hackathon test was taken.
I am a passionate React Js Frontend Developer with experience in building user-friendly and responsive web applications.
Experienced in developing web applications using React Js
Proficient in HTML, CSS, and JavaScript
Familiar with state management libraries like Redux
Strong understanding of responsive design principles
Ability to work collaboratively in a team environment
I am responsible for developing and maintaining the frontend of the project using React Js.
Developing user-friendly interfaces using React Js
Implementing responsive design and ensuring cross-browser compatibility
Collaborating with backend developers to integrate frontend with backend services
Optimizing application performance and troubleshooting issues
Participating in code reviews and providing feedback to team members
SSR in React is implemented using server-side rendering to pre-render React components on the server before sending them to the client.
Use libraries like Next.js or Gatsby to implement SSR in React.
Configure server to render React components on the server side.
Optimize server-side rendering for performance by caching rendered components.
To change a React project from development mode to production mode, you need to build the project using the 'npm run build' command.
Run 'npm run build' command in the terminal to create a production build of the project.
This command will generate a 'build' folder with optimized and minified files for production.
You can then deploy the contents of the 'build' folder to a web server for production use.
Lazy loading is a technique used to defer loading non-essential resources until they are needed.
Lazy loading helps improve performance by only loading resources when they are required.
In React, lazy loading can be implemented using React.lazy() and Suspense components.
Example: const MyComponent = React.lazy(() => import('./MyComponent'));
Example:
React routing is a way to handle navigation in a React application by defining routes and rendering components based on the URL.
React routing allows for declarative routing, where routes are defined using JSX elements.
It enables dynamic routing based on the URL, allowing for different components to be rendered based on the route.
React Router is a popular library for handling routing in React applications.
Unlike convent...
posted on 7 Dec 2024
Quantitative aptitude, logical apptiude,
I applied via Approached by Company and was interviewed in Oct 2024. There was 1 interview round.
Debugger in JavaScript is used for pausing the execution of code to inspect variables, check the flow of the program, and debug errors.
Debugger helps in identifying and fixing bugs in the code.
It allows developers to step through code line by line to understand the flow of execution.
Developers can inspect variables and their values at different points in the code.
By setting breakpoints, developers can pause the code at...
posted on 8 Nov 2024
I applied via Naukri.com and was interviewed in May 2024. There were 2 interview rounds.
CORS error occurs when a web application makes a request to a different domain than the one it originated from.
CORS stands for Cross-Origin Resource Sharing
It is a security feature implemented by browsers to prevent unauthorized access to resources on a different domain
CORS error can be resolved by configuring the server to include the appropriate CORS headers in the response
Common CORS error messages include 'Access-C...
Promises in JavaScript are objects representing the eventual completion or failure of an asynchronous operation.
Promises are used to handle asynchronous operations in JavaScript.
They can be in one of three states: pending, fulfilled, or rejected.
Promises can be chained using .then() method to handle success and failure cases.
Promises help in avoiding callback hell and writing cleaner asynchronous code.
Directives are used to add behavior to existing DOM elements, while components are used to create new custom elements.
Directives are used to manipulate the behavior of existing DOM elements, such as changing their appearance or adding event listeners.
Components are used to create custom elements with their own templates, styles, and behavior.
Directives can be structural (like ngIf and ngFor) or attribute-based (like ng...
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.
Variable and function declarations are hoisted to the top of their scope, regardless of where they are declared in the code.
Only the declarations are hoisted, not the initializations.
Function declarations are hoisted before variable declarations.
Design patterns are reusable solutions to common problems in software design.
Design patterns help in creating maintainable, scalable, and efficient code.
They provide a common language for developers to communicate about solutions to recurring problems.
Examples of design patterns include Singleton, Factory, Observer, and Strategy patterns.
ReplaySubject is a type of Subject in RxJS that records multiple values and replays them to new subscribers.
ReplaySubject is a type of Subject in RxJS
It records multiple values and replays them to new subscribers
It has a buffer size that determines how many values to replay
Time queue in API refers to managing requests in a sequential order.
Time queue ensures that API requests are processed in the order they are received.
It helps in preventing overload on the server by limiting the number of concurrent requests.
Examples include using promises or async/await in JavaScript to handle API calls sequentially.
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