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Frontend development is a hot field with companies actively seeking skilled developers, offering attractive salary packages. If you’re keen on pursuing a career as a frontend developer and feel you’ve got the necessary skills, you’re on the right track. This guide to Frontend Developer Interview Questions is tailor-made to assist you in acing your upcoming interview. It compiles a range of questions covering different languages and frameworks crucial for frontend development.
Meta tags reside within the HTML Head tag and are pivotal for browsers, not the interface. They typically comprise name-value pairs and include elements like character encoding, title, and description.
Basic design components include Line (a mark created by various tools), Size (the space occupied by a shape), Texture (the surface quality like smoothness or gloss), and Color (defined by hue, value, and intensity of light reflected).
Load balancing involves distributing incoming network traffic across multiple backend servers.
Npm stands for Node Package Manager, serving as a vital tool for managing packages in the Node.js ecosystem.
In JavaScript, each function operates within its scope, defining rules for variable access and management within its domain.
JavaScript is the core language, while jQuery is a JavaScript library designed to simplify DOM manipulation and event handling.
CSP, an HTML header, empowers site operators with control over resources loaded on a webpage, enhancing security by preventing certain types of attacks like Cross-Site Scripting.
XSS occurs when attackers inject malicious scripts into web applications, leading to the execution of unauthorized actions by unsuspecting users.
User-Centered Design focuses on creating designs that cater to user needs, involving users in every stage of the design process.
Callback hell refers to complex JavaScript code structured in a pyramid-like fashion due to nested callbacks, making code difficult to follow and manage.
In object-oriented programming, polymorphism denotes the capability of a single interface to support multiple functionalities.
Strict mode in ECMAScript 5 enforces a more secure and optimized context for coding, identifying and preventing common coding errors.
The KISS principle, or “Keep it simple, stupid,” emphasizes that simpler systems function more effectively, originally coined as a design strategy in the US Navy.
SOLID encapsulates key principles: Single Responsibility, Open-Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion.
ClickJacking involves tricking users into interacting with one element while unknowingly interacting with another, often a malicious entity.
Coercion refers to the conversion of different JavaScript data types, occurring either explicitly or implicitly.
Immediately-Invoked Function Expressions (IIFEs) are functions that execute immediately after their creation, maintaining encapsulation and avoiding global scope pollution.
The grid system in CSS offers a structured layout for content placement, facilitating consistent organization using rows and columns.
Optimizing images, utilizing browser caching, and compressing or optimizing content are effective techniques to decrease page load times.
Stringify is a method in JavaScript used to convert a JavaScript object into a string representation, facilitating easier data transmission or storage.
The CSS Box Model encompasses four primary constituents:
Srcset is employed to generate various image solutions suited for different devices, enhancing user interface and responsiveness by allowing the browser to select the most appropriate image size based on the device’s specifications.
MySQL serves as a relational Database Management System, utilizing SQL as its primary language for database management. Similar to other databases, MySQL organizes data in a table-based structure.
MongoDB is a NoSQL database that represents data elements using a JSON-like structure. Alterations in MongoDB require the use of the MongoDB Query Language, offering flexibility in data storage and retrieval.
HTML forms the backbone of Frontend Development, and these interview questions focus on key aspects of HTML.
Attributes are properties added to HTML tags, altering their behavior or display. They are placed within the tag brackets, immediately following the tag name. For instance, in <h1>Hello</h1>, the <h1> tag represents an attribute.
Marquee is utilized to scroll text or images on a webpage, moving content automatically in various directions. It’s applied using the <marquee> tags.
Semantic HTML employs markup to emphasize the content’s meaning. Instead of using <b> for bold or <i> for italic, semantic HTML utilizes <em> and <strong> to represent emphasis and importance in content.
Tables in HTML are structured using <table>, <tr> for rows, <td> for data cells, and <th> for headers.
HTML SVG represents vector and raster graphics described in XML text files. It’s commonly used for diagrams and graphical representations such as pie charts and 2D graphs.
HTML provides various tags to segment text:
<br> tag: Breaks a line of text.<p> tag: Creates a text paragraph.<blockquote> tag: Indicates quoted passages.By using the <iframe> tag, you can embed one webpage within another, creating a nested web page.
<ul> tags with each list element marked between <li> tags.<ol> tags and include list elements between <li> tags, with a specified numerical or alphabetical order.Now, let’s explore the next series of interview questions, focusing on CSS.
Incorporating CSS in HTML can be approached in three ways:
$ sign for variable declaration.@ symbol for variables.@ or $ for variable declaration.The Box Sizing property governs the calculation of a box’s height and width, utilizing three key models:
The property responsible for underlining, strikethrough, and overlining text is text-decoration.
I’ve condensed and restructured the information to ensure clarity and coherence for those delving into CSS concepts.