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Entro Labs IT Solutions Front end Web Developer Interview Questions, Process, and Tips
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1 interview found
Surya Karuturi
Interview Questionnaire
12 Questions
- Q1. How to insert the copyright symbol in the HTML file?
- Ans.
The copyright symbol can be inserted in an HTML file using the HTML entity code © or the Unicode character code ©.
Use the HTML entity code © to insert the copyright symbol.
Alternatively, use the Unicode character code © to insert the copyright symbol.
Place the entity or character code within the HTML file where you want the copyright symbol to appear.
- Q2. What is the Marquee tag?
- Ans.
The Marquee tag is an HTML element used to create scrolling or moving text or images on a web page.
The Marquee tag is deprecated in HTML5 and should not be used in modern web development.
It can be used to create eye-catching effects or to display important information.
The direction, behavior, speed, and content of the scrolling can be customized using attributes.
Example:
- Q3. How can we get the geographic position of a user in HTML5?
- Ans.
HTML5 provides the Geolocation API to get the geographic position of a user.
Use the navigator.geolocation object to access the Geolocation API.
Call the getCurrentPosition() method to retrieve the user's current position.
Handle the success and error callbacks to process the position data or handle errors.
The position object contains latitude, longitude, accuracy, and timestamp information.
- Q4. Explain Flexbox and CSS grid?
- Ans.
Flexbox and CSS grid are layout modules in CSS that allow for responsive and flexible web design.
Flexbox is a one-dimensional layout system that allows for easy alignment and distribution of elements within a container.
CSS grid is a two-dimensional layout system that allows for more complex and flexible layouts.
Flexbox is best for arranging items in a single row or column, while CSS grid is best for creating more compl...
- Q5. Mention some of the JavaScript datatypes?
- Ans.
JavaScript has several datatypes including string, number, boolean, object, array, null, and undefined.
String: represents a sequence of characters
Number: represents numeric values
Boolean: represents true or false
Object: represents a collection of key-value pairs
Array: represents an ordered list of values
Null: represents the intentional absence of any object value
Undefined: represents an uninitialized variable
- Q6. What is the use of Webkit in CSS3?
- Ans.
Webkit is a rendering engine used by browsers to display web pages and is used for CSS3 animations and transitions.
Webkit is a layout engine used by Safari, Chrome, and other browsers.
It is used for CSS3 animations and transitions.
Webkit is responsible for rendering web pages in the browser.
It supports various CSS3 features like gradients, shadows, and reflections.
Webkit prefixes are used to target specific browsers fo
- Q7. What is Z-index in CSS?
- Ans.
Z-index is a CSS property that controls the stacking order of elements on a web page.
Higher z-index values place elements on top of lower ones
Z-index only works on positioned elements (position: absolute, position: relative, position: fixed)
Negative z-index values place elements behind the default stacking order
Z-index can be used to create layered effects on a web page
- Q8. How can you integrate CSS on a web page?
- Ans.
CSS can be integrated on a web page by linking an external CSS file, using inline styles, or embedding CSS within the HTML document.
Link an external CSS file using the tag in the
section of the HTML document.Use inline styles by adding the 'style' attribute to HTML elements.
Embed CSS within the HTML document using the
- Q10. How many types of heading does an HTML contain?
- Ans.
HTML contains six types of headings.
HTML contains six levels of headings, from
to
.
The
element represents the highest level of heading, while
represents the lowest.
Headings are used to structure and organize content on a web page.
Each heading level has a different visual appearance and semantic meaning.
Headings should be used in a hierarchical order, with
being the main heading and
being the least important.
Exampl
- Q11. What is the use of isNaN function?
- Ans.
The isNaN function is used to determine whether a value is NaN (Not-a-Number) or not.
The isNaN function returns true if the value is NaN, otherwise false.
It is commonly used to validate numeric input in JavaScript.
NaN is a special value representing an unrepresentable or undefined value in JavaScript.
The isNaN function can be used with both numbers and strings.
- Q12. Is it possible to break JavaScript Code into several lines?
- Ans.
Yes, JavaScript code can be broken into several lines for better readability and organization.
JavaScript code can be broken into multiple lines using line breaks or the backslash character.
Line breaks are automatically interpreted as the end of a statement in JavaScript.
The backslash character can be used to continue a statement onto the next line.
Breaking code into multiple lines can improve code readability and make ...
Skills evaluated in this interview
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Front end Web Developer Interview Questions & Answers
TCS
Vemagiri Nagamuneeswari
posted on 24 Dec 2023
Selected
I applied via Referral and was interviewed in Nov 2023. There were 3 interview rounds.
The disscus is some problems slove software coading and front end development
Use coading of software coading and web developer
Interview Preparation Tips
And my work is the good affort for 24/7
Thank you 😊
Html,css,javascript,reactjs,php,laravel.bootstrap
(2 Questions)
- Q1. Why we use reactjs? and javascript
- Ans.
ReactJS is used for building interactive user interfaces, while JavaScript is the programming language that powers web development.
ReactJS allows for component-based architecture, making it easier to manage and update UI elements.
ReactJS uses a virtual DOM for efficient rendering, improving performance.
JavaScript is the language used to add interactivity and dynamic behavior to web pages.
JavaScript is essential for cli...
- Q2. This is use fro single page web aplication or real time.
Skills evaluated in this interview
Selected
I applied via Naukri.com and was interviewed before Jan 2022. There were 3 interview rounds.
(2 Questions)
- Q1. 1. What is redux? 2. What are useRefs
- Ans.
Redux is a predictable state container for JavaScript apps. useRef is a hook in React for accessing DOM nodes.
Redux is a state management library for JavaScript applications
It helps in managing the state of an application in a predictable way
Redux follows a unidirectional data flow pattern
useRef is a hook in React that allows accessing DOM nodes or any other mutable value
It returns a mutable ref object that persists ac
- Q2. What is destructuring
- Ans.
Destructuring is a way to extract values from arrays or objects and assign them to variables.
Destructuring can be used with arrays and objects
It allows you to extract values and assign them to variables in a single line of code
You can also use default values and rename variables during destructuring
Example: const [a, b] = [1, 2]; // a = 1, b = 2
Example: const {name, age: years} = {name: 'John', age: 30}; // name = 'Joh
(1 Question)
- Q1. What is store in react
- Ans.
Store in React is a centralized state management system.
Store holds the state of the application.
It allows components to access and update the state.
Redux is a popular store implementation for React.
Context API is another built-in store in React.
Store helps in managing complex state and makes debugging easier.
Interview Preparation Tips
Skills evaluated in this interview
(7 Questions)
- Q1. Css flexbox and grid
- Q2. Pagination on scroll
- Ans.
Implementing pagination on scroll allows for loading more content as the user reaches the bottom of the page.
Use a scroll event listener to detect when the user has reached the bottom of the page
Make an API call to fetch more data when the bottom is reached
Append the new data to the existing content on the page
- Q3. Immediately invoked fn and anonymous fn
- Ans.
Immediately invoked function expressions (IIFE) are functions that are executed immediately after they are created.
IIFE is defined and invoked at the same time using parentheses at the end of the function declaration.
Anonymous functions do not have a name and can be used as IIFE by wrapping them in parentheses.
IIFE is commonly used to create a private scope for variables and functions.
- Q4. What are closures
- Ans.
Closures are functions that have access to variables from their outer scope even after the outer function has finished executing.
Closures allow functions to access variables from their parent function even after the parent function has returned
They help in creating private variables and functions in JavaScript
Closures are commonly used in event handlers and callbacks
- Q5. What is promise? explain
- Ans.
A promise is an object 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 callbacks.
Example: Fetch API returns a promise when making an HTTP request.
- Q6. What is lazy loading -explain
- Ans.
Lazy loading is a technique used in web development to defer loading non-essential resources until they are needed.
Lazy loading helps improve page load times by only loading resources when they are required.
It is commonly used for images, videos, and other media files on a webpage.
Lazy loading can be implemented using JavaScript libraries like Intersection Observer or by using native browser features like loading='lazy
- Q7. Media query and css selectors
Skills evaluated in this interview
I applied via AmbitionBox and was interviewed in Aug 2024. There were 4 interview rounds.
(2 Questions)
- Q1. Brief introduction of yourself.
- Ans.
Experienced HTML developer with a passion for creating user-friendly websites.
Over 5 years of experience in HTML development
Proficient in CSS and JavaScript
Strong understanding of responsive design principles
Familiar with SEO best practices
Portfolio includes websites for various clients and industries
- Q2. What is HTML give a proper explanation
- Ans.
HTML stands for HyperText Markup Language, used for creating and structuring web pages.
HTML is the standard markup language for creating web pages
It uses tags to define the structure and content of a web page
Examples of HTML tags include ,
,, <body>, <p>, <div>, <a>, </p></li></ul></p></body>
(2 Questions)
- Q1. Explanation of CSS.
- Ans.
CSS is a styling language used to control the look and feel of a website.
CSS stands for Cascading Style Sheets.
It is used to define styles for web pages, including colors, fonts, layout, and more.
CSS can be applied to HTML elements using selectors.
It allows for the separation of content from presentation, making it easier to maintain and update.
CSS can be included in an HTML document using the
- Q2. Explanation of bootstrap.
- Ans.
Bootstrap is a front-end framework for developing responsive and mobile-first websites.
Bootstrap is a free and open-source CSS framework.
It includes pre-built design templates and components like buttons, forms, and navigation bars.
Bootstrap uses a 12-column grid system for easy layout customization.
It also has built-in responsive utilities for creating mobile-friendly designs.
Bootstrap can be customized using Sass var
(2 Questions)
- Q1. Codes of HTML and made a program
- Ans.
HTML codes are used to create web pages. Developers write HTML codes to structure content on a webpage.
HTML tags are used to define the structure of a webpage, such as headings, paragraphs, images, links, etc.
Example:
This is a heading
,This is a paragraph
,
HTML attributes provide additional information about an element, such as the source of an image or the target of a link.
Example: Ans.
CSS is a styling language used to design the layout and appearance of web pages, while landing pages are web pages designed for a specific purpose.
CSS stands for Cascading Style Sheets and is used to control the visual presentation of HTML elements on a web page.
CSS allows developers to style elements such as fonts, colors, spacing, and layout.
Landing pages are web pages specifically designed to achieve a particular go...
Explanation of HTML ,CSS and bootstrap.
Interview Preparation Tips
Skills evaluated in this interview
Coding a frontend UI from provided image. And creating a fucntional star rating system
(2 Questions)
- Q1. Designing a Component API in React using Typescript.
- Ans.
Designing a Component API in React using Typescript involves defining props, state, and methods for the component.
Define the props interface to specify the expected input data for the component
Use typescript types to ensure type safety and prevent runtime errors
Define the state interface to manage the internal state of the component
Implement methods to handle user interactions and component logic
Document the component
- Q2. Create a function that can clear all the timer ids at once.
- Ans.
Function to clear all timer ids at once
Create an array to store all timer ids
Iterate through the array and clear each timer id using clearTimeout() function
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
(1 Question)
- Q1. Introduction life cycle looks pipe @input @output
(2 Questions)
- Q1. What is event bubbling
- Q2. What is TDD and why TDD
Interview Preparation Tips
Suchandra Das
Selected
I applied via Naukri.com and was interviewed in Jun 2024. There were 3 interview rounds.
It was a hacker coding test mostly javascript questions
(3 Questions)
- Q1. React advance concept
- Q2. Context api how to use that
- Ans.
Context API is a feature in React that allows sharing data between components without having to pass props manually.
Create a context using createContext() method
Use the Provider component to wrap the components that need access to the context
Access the context data using the useContext() hook within the consuming components
- Q3. Higher order component
(3 Questions)
- Q1. Mainly introduction, how do you manage a project
- Q2. How to debug a code
- Ans.
Debugging a code involves identifying and fixing errors in the code to ensure it runs correctly.
Use console.log() statements to print out values and check for errors
Utilize browser developer tools to inspect elements and debug JavaScript
Step through the code using breakpoints to identify the source of the issue
Review error messages and stack traces to pinpoint the problem
Consider using tools like linters and debuggers
- Q3. How to get employee details using group by
- Ans.
Employee details can be retrieved using group by clause in SQL.
Use GROUP BY clause in SQL to group employee details based on a specific column
Aggregate functions like COUNT, SUM, AVG can be used with GROUP BY to get summarized employee details
Example: SELECT department, COUNT(*) as total_employees FROM employees GROUP BY department
Skills evaluated in this interview
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