Web Designing Q&A
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- What does HTML stand for?
Hyper Text Markup Language. - What is the purpose of HTML?
To structure content on the web. - What are HTML elements?
Individual components of HTML documents, such as headings, paragraphs, and links. - What is the difference between block-level and inline elements?
Block-level elements take up the full width, while inline elements only take up as much width as necessary. - What is the <head> section used for?
To contain metadata, links to stylesheets, and scripts. - What is the purpose of the <title> tag?
To define the title of the web page, shown in the browser’s title bar. - What is an HTML attribute?
A modifier of an HTML element that provides additional information (e.g., class, id). - What are semantic HTML elements?
Elements that clearly describe their meaning (e.g., <header>, <footer>, <article>). - What is the <form> element used for?
To collect user input. - What is a doctype?
A declaration that defines the document type and version of HTML. - What are data attributes in HTML?
Custom attributes that store extra information on standard HTML elements. - What is the <meta> tag?
An element that provides metadata about the HTML document, such as character set and viewport settings. - What is the <canvas> element?
An element used for drawing graphics via JavaScript. - What are iframes?
HTML elements that allow you to embed another document within the current document. - What is the purpose of the <alt> attribute in <img> tags?
To provide alternative text for an image if it cannot be displayed.
- What does CSS stand for?
Cascading Style Sheets. - What is the purpose of CSS?
To style HTML elements. - What are selectors in CSS?
Patterns used to select the elements you want to style. - What is the difference between class and ID selectors?
Class selectors are reusable (e.g., .class), while ID selectors are unique to a single element (e.g., #id). - What is the box model in CSS?
A model that describes how the width and height of an element are calculated (including padding, border, and margin). - What are margins in CSS?
The space outside an element’s border. - What is padding in CSS?
The space between an element’s content and its border. - What are media queries?
CSS techniques that apply styles based on device characteristics, like width or height. - What is Flexbox?
A CSS layout model that allows for the responsive arrangement of elements in a container. - What are CSS preprocessors?
Tools like SASS and LESS that extend CSS with variables, nesting, and other features. - What are CSS transitions?
Techniques for animating changes between CSS property values. - What are CSS animations?
A way to create complex animations using keyframes. - What is the difference between absolute and relative positioning?
Absolute positioning removes an element from the document flow, while relative positioning keeps it in the flow. - What is a CSS grid?
A layout system for creating two-dimensional designs. - What is a CSS reset?
A stylesheet that removes default browser styling to create consistency across browsers. - What is JavaScript?
A programming language used to create interactive effects within web browsers. - What is the purpose of JavaScript?
To add dynamic behavior and interactivity to web pages. - What are variables in JavaScript?
Containers for storing data values. - What are the data types in JavaScript?
Undefined, Null, Boolean, Number, String, Object, Symbol. - What is a function in JavaScript?
A block of code designed to perform a specific task. - What is an array?
A data structure that can hold multiple values. - What is an object in JavaScript?
A collection of key-value pairs. - What is event bubbling?
The process where events propagate up from child to parent elements. - What is the DOM?
Document Object Model; a programming interface for web documents. - What is JSON?
JavaScript Object Notation; a lightweight data interchange format - What is the difference between == and ===?
== checks for value equality (type coercion), while === checks for both value and type equality. - What are callbacks?
Functions passed as arguments to other functions to be executed later. - What are promises in JavaScript?
Objects representing the eventual completion or failure of an asynchronous operation. - What is async/await?
Syntax for working with asynchronous code in a more readable manner. - What is the this keyword?
Refers to the context in which a function is called. - What are comments in HTML?
Text not displayed in the browser, used for code explanation: <!– comment –>. - What is a CSS class?
A selector that applies styles to elements with the same class name. - What are semantic tags in HTML5?
Tags that convey meaning about the content (e.g., <article>, <section>). - What is a media type in CSS?
A type that specifies the intended use of a style sheet (e.g., screen, print). - What are the different ways to include CSS in a web page?
Inline styles, internal stylesheets, and external stylesheets. - What is the defer attribute in <script>?
It allows scripts to be executed after the document has been parsed. - What is the async attribute in <script>?
It allows scripts to be downloaded in parallel with the HTML parsing. - What is a closure in JavaScript?
A function that remembers its lexical scope even when the function is executed outside that scope. - What is the event delegation?
A technique that allows a single event listener to manage events for multiple child elements. - What is responsive web design?
An approach to web design that makes web pages render well on a variety of devices and window sizes. - What are CSS sprites?
A technique for combining multiple images into a single image to reduce HTTP requests. - What is a CSS framework?
A pre-prepared library of CSS code that helps in designing web pages. - What is the purpose of the z-index property?
To control the stacking order of overlapping elements. - What is the event.preventDefault() method?
A method that cancels the default action of an event. - What is AJAX?
Asynchronous JavaScript and XML; a technique for making asynchronous requests to a server. - What is the difference between let, const, and var?
var is function-scoped, let is block-scoped, and const is also block-scoped but cannot be reassigned. - What is a CSS fallback?
A method for providing alternative styles if the preferred styles are not supported. - What is a service worker?
A script that runs in the background to manage caching and offline capabilities for web applications.
