10+ UI UX Architect Interview Questions and Answers

Web storages include local storage, session storage, and cookies. Session storage is not available in other tabs or windows.

• Local storage persists even after the browser is closed, while session storage is cleared when the session ends.

• Cookies are used for storing small amounts of data that can be accessed by both the server and client.

• Session storage is only available within the same tab or window where it was created.

• Example: A user logs into a website and their login infor...read more

Polyfill is a code that provides modern functionality on older browsers.

• Polyfills are used to fill the gap between modern and older browsers.

• They are written in JavaScript and provide functionality that is not natively supported by the browser.

• Polyfills can be used for Array methods like forEach, map, filter, reduce, etc.

• Here's an example of a polyfill for the Array.prototype.forEach method: Array.prototype.forEach = function(callback) { for (var i = 0; i < this.length; i++) ...read more

Use React.memo, useCallback, and shouldComponentUpdate to reduce unnecessary re-renders.

• Use React.memo to memoize functional components and prevent re-renders when props don't change.

• Use useCallback to memoize functions and prevent re-creation on every render.

• Use shouldComponentUpdate to prevent class components from re-rendering unnecessarily.

• Avoid using inline functions in render methods as they create new function instances on every render.

• Use PureComponent instead of Comp...read more

Event bubbling and capturing are two ways of propagating events in the DOM tree.

• Event bubbling is the process of an event propagating from the innermost element to the outermost element in the DOM tree.

• Event capturing is the opposite of event bubbling, where the event is captured at the outermost element and propagated to the innermost element.

• Event listeners can be added to either the capturing or bubbling phase using the addEventListener method.

• Event.stopPropagation() can b...read more

IndexDB is a client-side storage system for web applications.

• It allows storing data in key-value pairs.

• It is an alternative to cookies and local storage.

• It supports transactions for atomic operations.

• It can store large amounts of structured data.

• It can be accessed using JavaScript APIs.

Web sockets are a communication protocol that allows real-time bidirectional communication between a client and a server.

• Web sockets use a persistent connection between the client and server

• They allow for real-time data transfer without the need for constant HTTP requests

• Web sockets are commonly used in chat applications, online gaming, and stock trading platforms

Dependency injection in Angular is a design pattern where components are given their dependencies rather than creating them.

• In Angular, dependency injection is used to provide components with the services or objects they need.

• It helps in creating loosely coupled components, making them easier to test and maintain.

• Dependencies are injected into a component's constructor using TypeScript.

• Example: constructor(private userService: UserService) {}

Prototype Inheritance is a way of creating objects based on existing objects.

• It allows objects to inherit properties and methods from other objects.

• It is a feature of object-oriented programming in JavaScript.

• It helps in creating efficient and reusable code.

• Example: A 'Car' object can inherit properties and methods from a 'Vehicle' object.

IIFE stands for Immediately Invoked Function Expression in JavaScript.

• IIFE is a function that is defined and immediately invoked.

• It helps to create a private scope for variables to avoid polluting the global scope.

• Example: (function() { console.log('IIFE executed'); })();

CSS Box Model is a fundamental concept in web design that defines the structure and layout of elements on a webpage.

• It consists of content, padding, border, and margin.

• Content area is where text and images are displayed.

• Padding is the space between the content and the border.

• Border is the boundary of the element.

• Margin is the space outside the border.

Core Web Vitals are a set of specific factors that Google considers important for user experience on a website.

• Core Web Vitals consist of Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS).

• Largest Contentful Paint (LCP) measures loading performance and marks the point in the page load timeline when the page's main content has likely loaded.

• First Input Delay (FID) measures interactivity and quantifies the responsiveness of a page when a ...read more