10 Questions and their Answers, Every Web Developer should know
✅ What is the difference between HTML, CSS, and JavaScript?
🔸HTML (Hypertext Markup Language) is used for structuring the content of a web page.
🔸CSS (Cascading Style Sheets) is used for styling and layout.
🔸JavaScript is a programming language that adds interactivity and functionality to web pages.
✅ Explain the box model in CSS.
🔸The CSS box model describes the layout of elements on a web page.
🔸It consists of content, padding, border, and margin.
🔸The total width and height of an element are calculated as the sum of these components.
✅ What is responsive web design, and how do you achieve it?
🔸Responsive web design is an approach that ensures a website looks and functions well on various devices and screen sizes.
🔸Achieve it by using fluid grids, flexible images, and media queries to adapt the layout and content based on the device’s screen size.
✅ What is a CSS preprocessor, and why would you use one?
🔸A CSS preprocessor is a scripting language that extends the capabilities of CSS.
🔸Popular preprocessors include SASS and LESS.
🔸They provide features like variables, nesting, and functions, making CSS more maintainable and efficient.
✅ Explain the same-origin policy and how it affects web development.
🔸The same-origin policy is a security measure that restricts web pages from making requests to domains other than the one that served the web page.
🔸It prevents cross-site scripting (XSS) and cross-site request forgery (CSRF) attacks.
✅ What is the Document Object Model (DOM), and how is it used in web development?
🔸The DOM represents the structure of an HTML document as a tree of objects that can be manipulated with JavaScript.
🔸Web developers use the DOM to dynamically update and interact with the content of a web page.
✅ What is HTTP and how does it work?
🔸HTTP (Hypertext Transfer Protocol) is a protocol used for transferring data over the web.
🔸It’s based on a client-server model, where a client (e.g., a web browser) sends requests to a server (e.g., a web server) to retrieve web resources such as HTML documents and images.
✅ Explain the difference between GET and POST requests in HTTP.
🔸GET requests are used to retrieve data from a server and should not have any side effects.
🔸POST requests are used to send data to the server, often to update or create resources, and can have side effects.
✅ What are web accessibility standards, and why are they important?
🔸Web accessibility standards, such as WCAG (Web Content Accessibility Guidelines), ensure that websites and web applications are usable by people with disabilities.
🔸Adhering to these standards is important to make the web more inclusive and reach a broader audience.
✅ What are the advantages of using version control systems like Git in web development?
🔸Version control systems like Git help track changes to code, collaborate with team members, and maintain a history of a project’s development.
🔸 They make it easier to manage and merge code changes, roll back to previous versions, and work on multiple features concurrently.
These questions and answers cover a range of fundamental concepts and topics that web developers should be familiar with to build effective and secure web applications.
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