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.

Find the repeated and missing element in an array of n elements containing 0 to n-1 elements.

• Create a hash table to keep track of the frequency of each element.

• Iterate through the array and update the hash table.

• Find the element with frequency greater than 1 as the repeated element.

• Find the missing element by subtracting the sum of array elements from the sum of 0 to n-1 elements.

• Return the repeated and missing elements.

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.

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 it easier to understand and maintain.

• Example: var message ...read more

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.

• Example:

  This is a Heading 1

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

Reconciliation process is used by React to update the DOM efficiently.

• Reconciliation is the process of comparing the new virtual DOM with the previous one to identify the changes.

• React then updates only the necessary changes to the real DOM, instead of re-rendering the entire page.

• This process helps in improving the performance of the application.

• React uses a diffing algorithm to compare the two virtual DOMs and identify the changes.

• The diffing algorithm is optimized to reduc...read more

Polymorphism allows objects of different classes to be treated as if they were the same type. Virtual keyword is used in overloading to enable dynamic binding.

• Polymorphism enables code reuse and flexibility in object-oriented programming.

• Virtual keyword is used in function overloading to allow the compiler to determine which function to call at runtime based on the type of object.

• Without virtual keyword, the function called would be determined at compile-time based on the typ...read more

To fetch data from backend in JS and React JS, use fetch() or axios() API.

• Use fetch() or axios() API to make HTTP requests to the backend server

• Pass the URL of the backend API endpoint as an argument to fetch() or axios()

• Handle the response from the backend using .then() or async/await

• Parse the response data using JSON.parse()

• Update the state of the React component with the fetched data

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.

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

Functional components are stateless and use functional programming concepts, while class components are stateful and use object-oriented programming concepts.

• Functional components are written as functions, while class components are written as classes.

• Functional components do not have their own state, while class components can have state.

• Functional components are simpler and easier to understand, while class components offer more flexibility and features.

• Functional component...read more

React has three main life cycle methods: Mounting, Updating, and Unmounting.

• Mounting: constructor(), static getDerivedStateFromProps(), render(), componentDidMount()

• Updating: static getDerivedStateFromProps(), shouldComponentUpdate(), render(), getSnapshotBeforeUpdate(), componentDidUpdate()

• Unmounting: componentWillUnmount()

• Examples: componentDidMount() is used to fetch data from an API, componentWillUnmount() is used to clean up any resources used by the component before it ...read more

let and var are both used to declare variables in JavaScript, but they have different scoping rules.

• let has block scope, while var has function scope

• let can be updated but not re-declared in the same scope, while var can be both updated and re-declared

• let is a relatively new addition to JavaScript, while var has been around since the beginning

Internal access modifier limits the access to within the same assembly.

• Internal members can be accessed only within the same assembly.

• It is useful for hiding implementation details from other assemblies.

• It is also useful for creating helper classes that are only used within the same assembly.

A stateful functional component can be created using the useState hook in React.

• Import the useState hook from React

• Declare a state variable using the useState hook

• Use the state variable in the component

• Update the state variable using the setState function

• Example: const [count, setCount] = useState(0);

• Example: setCount(count + 1)}>Click me

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 for CSS3 properties.

Use window.location.href to get the URL of the current page in JavaScript

• Access the URL using window.location.href

• Alternatively, use document.URL to get the URL

• You can also use window.location.toString() to get the URL

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: Scrolling text

Shadowing in JavaScript is when a variable declared within a certain scope has the same name as a variable in an outer scope.

• Occurs when a variable in a local scope has the same name as a variable in a parent scope

• The local variable takes precedence over the parent variable within the local scope

• Can cause confusion and unexpected behavior if not handled properly

Create a page that changes color when clicked

• Create a basic HTML page with a button or div element

• Use JavaScript to add an event listener for the click event

• Inside the event listener function, change the background color of the page

React component life cycle defines the stages of a component from initialization to destruction.

• React component life cycle consists of three phases: Mounting, Updating, and Unmounting.

• Mounting phase includes constructor, getDerivedStateFromProps, render, componentDidMount methods.

• Updating phase includes getDerivedStateFromProps, shouldComponentUpdate, render, getSnapshotBeforeUpdate, componentDidUpdate methods.

• Unmounting phase includes componentWillUnmount method.

• Life cycle m...read more

Embedded Style Sheet is a type of CSS that is written directly within the HTML file.

• Embedded Style Sheet is used to define the style of a single HTML document.

• It is written within the

Floating point arithmetic is not exact, hence 0.1+0.2 may not be exactly 0.3.

• Floating point numbers are represented in binary, which can lead to rounding errors.

• 0.1 and 0.2 cannot be represented exactly in binary, hence the result may not be exact.

• This is not specific to JavaScript, but a general issue with floating point arithmetic.

• To avoid such issues, use libraries like decimal.js or round off the result to a certain number of decimal places.

Yes, I am comfortable with relocating to Jodhpur.

• I am open to new opportunities and experiences.

• I am willing to relocate for the right job.

• I have researched Jodhpur and am excited about the prospect of living there.

• I am adaptable and can adjust to new environments quickly.

I balance work pressure by prioritizing tasks, taking breaks, and seeking support when needed.

• I prioritize tasks based on urgency and importance

• I take short breaks throughout the day to recharge

• I communicate with my team and manager if I need additional support or resources

• I practice stress-reducing activities outside of work, such as exercise or meditation

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

Create a visually appealing home page resembling a real website

• Use a clean and modern design

• Include a navigation bar with links to different sections

• Add engaging visuals and content

• Ensure responsive design for different screen sizes

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 client-side scripting, form validation, and AJAX requests.

• Bot...read more

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 across re-renders

Flexbox properties are used for creating flexible and responsive layouts in CSS.

• display: flex - defines a flex container

• flex-direction - defines the direction of the main axis

• justify-content - aligns items along the main axis

• align-items - aligns items along the cross axis

• flex-wrap - defines whether items should wrap or not

• flex-grow - defines how much a flex item should grow

• flex-shrink - defines how much a flex item should shrink

• flex-basis - defines the initial size of a flex ...read more

The architecture of my React web application follows a component-based structure with state management using Redux.

• Components are organized into reusable and independent units for UI elements.

• State management is handled using Redux to manage application state globally.

• Data flow is unidirectional, with actions triggering state changes through reducers.

• Routing is implemented using React Router for navigation between different components.

• API calls are made using libraries like A...read more

Event loop is a mechanism that allows JavaScript to handle multiple tasks simultaneously.

• Event loop is a part of JavaScript runtime environment.

• It continuously checks the call stack and the task queue.

• If the call stack is empty, it takes the first task from the queue and pushes it to the call stack.

• Examples of tasks include user input, network requests, and setTimeout() functions.

An abstract class is a class that cannot be instantiated and is used as a base class for other classes.

• An abstract class can have abstract and non-abstract methods.

• Abstract methods have no implementation and must be implemented by the derived class.

• An abstract class can have constructors, fields, and non-abstract methods.

• An abstract class is declared using the 'abstract' keyword.

• Example: abstract class Shape { abstract void draw(); }

To add an image in an image tag, use the 'src' attribute and provide the image file path.

• Use the tag to display an image on a web page

• Add the 'src' attribute to specify the image file path

• Optionally, add the 'alt' attribute to provide alternative text for the image

• Example:

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 complex layouts with multiple rows and columns.

• Both Flexbox and...read more

React is a JavaScript library for building user interfaces.

• React allows for reusable UI components

• It uses a virtual DOM for efficient updates

• React is declarative, making it easier to understand and debug code

• It has a large and active community with many resources available

• React can be used for both web and mobile app development

Front-End Developer is passionate about creating user-friendly interfaces and enhancing user experience through design and functionality.

• Passionate about creating visually appealing and interactive websites

• Skilled in HTML, CSS, and JavaScript to bring designs to life

• Focused on optimizing user experience and usability

• Collaborates with designers and back-end developers to create seamless web applications

Create a visually appealing landing page with animations to engage users.

• Use CSS animations to create movement and transitions

• Incorporate interactive elements like hover effects or scrolling animations

• Consider using JavaScript libraries like GSAP or Anime.js for more complex animations

Use CSS properties like display, margin, and text-align to center a div element.

• Set the div element's display property to 'block' or 'inline-block'.

• Set the margin property to 'auto'.

• Use text-align property for inline elements inside the div if needed.

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 = 'John', years = 30

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.

HTML is a markup language used for creating the structure and content of web pages.

• HTML stands for HyperText Markup Language.

• It uses tags to define the structure and content of a web page.

• HTML elements are used to create headings, paragraphs, lists, links, images, tables, forms, etc.

• It provides a way to format and style the content using CSS.

• HTML5 is the latest version of HTML, introducing new elements and features.

Flexbox is a one-dimensional layout while Grid is a two-dimensional layout.

• Flexbox is best for arranging items in a single row or column

• Grid is best for arranging items in rows and columns

• Flexbox has a main axis and a cross axis

• Grid has rows and columns that intersect to create cells

• Flexbox is great for responsive design

• Grid allows for more complex layouts

• Flexbox is supported by older browsers

• Grid has better browser support in modern browsers

Modules in AEM are reusable components that can be used to build web pages and applications.

• Modules in AEM are reusable components that can be used to build web pages and applications.

• They help in organizing and structuring content in AEM.

• Modules can be created using Adobe Experience Manager's component framework.

• Examples of modules in AEM include header, footer, carousel, and navigation components.

Promises are used in JavaScript to handle asynchronous operations and avoid callback hell.

• Promises are used to handle asynchronous operations in a more readable and manageable way.

• They help avoid callback hell by chaining multiple asynchronous operations together.

• Promises can be in one of three states: pending, fulfilled, or rejected.

• They allow for better error handling with the use of .catch() method.

• Promises can be created using the new Promise() constructor or by using uti...read more

I specialize in HTML, CSS, and JavaScript for frontend development.

• Proficient in HTML for structuring web pages

• Skilled in CSS for styling and layout

• Experienced in JavaScript for interactivity and functionality