Front-End Development

What is Front-End Development?

Front-end Development is the development or creation of a user interface using some markup languages and other tools. It is the development of the user side where only user interaction will be counted. It consists of the interface where buttons, texts, alignments, etc are involved and used by the user.

Front-End Development

Languages for Front-end development

Front-end is the part that is accessible to the user only, It should be self-explanatory and must be user-friendly and designed. so to achieve this we have some basic languages which can be used to create interactive web pages. These are the basic needs for the creation of a web page.

• HTML: It was introduced in 1993 and currently at version HTML5, is a foundational language for creating structured web content. It facilitates the creation of forms, tables, and structured data, essential for input elements and organizing information on web pages. HTML’s evolution continues to shape the internet by enabling developers to design interactive and accessible user interfaces across various platforms and devices.
• CSS: CSS, introduced on 17 December 1996 and currently at version CSS3, stands for Cascading Style Sheets. It complements HTML by styling web pages, managing colors, and enabling the creation of responsive designs. CSS empowers web developers to enhance user interfaces, ensuring visually appealing and consistent layouts across different devices and screen sizes.
• JavaScript: ECMAScript, introduced on 4 December 1995 and currently at version ECMAScript 2022, is a lightweight, cross-platform, single-threaded programming language. It enables dynamic changes and event handling in web development, making it essential for creating interactive and responsive user interfaces.

Front-end Development Frameworks

Frameworks add more features to their respective languages. Frameworks provide extra features, structure, fast reloading, and many more things so that developers can develop a SPA(Single page application) easily. Some of them provide inbuilt functions or pre-defined components so that developer can directly use those in their projects.

• jQuery: Introduced in August 2006 and now at version 3.7.1, is an open-source JavaScript library specializing in DOM manipulation, CSS editing, event handling, AJAX requests, animations, and DOM traversal. It simplifies web development by offering a streamlined approach to interactive web design and client-side scripting, enhancing user interface responsiveness across different web applications.
• React: Introduced in May 2013 and now at version 18.2.0, is a JavaScript UI library designed for building SPAs. It emphasizes component-based development, efficient state management, and utilizes a virtual DOM for fast updates. React simplifies complex UI tasks, promotes code reusability, and is widely used in modern web application development.
• Angular: Introduced on October 20, 2010, and currently at version 17.0.3, is an open-source JavaScript framework by Google that follows the MVC pattern. It is used for building single-page applications (SPAs), ensuring fast page reloads, and providing a modern, modular structure for web development.
• Vue.js: Introduced in February 2014 and currently at version 3.3.0, is a JavaScript framework similar to ReactJS for designing UI layers. It features reactive data binding, a component-based architecture, Vue directives, and Vue Router for navigation, making it ideal for building dynamic and interactive web applications.
• Bootstrap: Introduced in August 2011 and currently at version 5.3.2, is an open-source front-end framework providing HTML, CSS, and JavaScript components. It includes a responsive grid system, pre-styled components, and various CSS and JavaScript tools, along with customizable themes and templates for rapid web development.

Responsive Web Development

Specifies that web applications should be accessible on devices of various shapes and sizes, particularly crucial for mobile devices due to increasing traffic.

Methods for Achieving Responsiveness:

• Breakpoints: Web applications adjust width and height based on device characteristics to enhance user interaction.
• Flexible Images: Ensures images fit within device width, adapting using frameworks or raw CSS.
• Flexible Grids: CSS grids align layouts responsively to accommodate different device sizes.
• Media Queries: CSS tool defining responsive changes at specific points based on device characteristics. Query in CSS is also used to make web pages responsive. In that we describe what to change on specific point.

Front-End Security

Whenever we create any web page and there is a section for login or signup then there must be a security so that the password given by the user must be secured and can not be accessed by third party between the login session. so we must provide security to our web pages. same goes for the web pages where a payment statement or any other confidential data is transfered or stored.

These are the attacks that can make your web page more risky:

• DoS (denial of service) attacks: This attack is common in all the other attcks. It can be difficult to deal with this attack as it is originate from thousand of systems in a single time and make your web page very slow. In this attack the attcker try to access the web page from thousands of system in a same time. the solution for denying this attack is we can use firewall or other flatforms which provides the security from these kind of attacks for e.g. CloudFlare.
• Preventing cross-site request forgery (CSRF): In this attack the attacker put some other buttons or suspicious element into your web page by using that the attcaker can access the token that is present in your web browser. and by using that token they can access your data and can present any kind of mis behaviour that can harm you. It can be prevented by using the md5 or sha256sum algorithm that is used to generate the token.
• Cross-site scripting (XSS) attacks: In this attack the attacker replace the some parts of the web page with similar looking component. for e.g. a user clicks a button for submiting the form but it send all the crucial information like bank details to the attacker or it starts downloading the malware files into your system.

Why learn Front-End Development?

Front-end development forms the foundation of user experience on the web, making it a crucial skill for aspiring developers. Mastering front-end techniques helps individuals to create visually appealing and interactive interfaces that engage users effectively. It helps to create responsive layouts which one can navigate seamlessly.

Front end development projects

You can make these front end developemen projects to build your strong resume and hand on practice:

• My Tribute Page
• Survey Form
• Parallax Website
• Restaurant Website
• Music Website
• Event webpage
• Image gallery
• Simple portfolio
• Portfolio gallery
• Technical Documentation
• Resume Builder

Front end development course

If you want to be a front end developer then you must know the basic language like HTML and designing language CSS etc. and there is more thing that you can learn that is mentioned above in a table that are mandatory to be a front end developer.

Also you can learn from official gfg course.

Front end development interview questions

• HTML interview Questions and Answers (2023)
• HTML Interview Questions and Answers (2023) – Intermediate Level
• HTML Interview Questions & Answers Set – 3
• JavaScript interview Questions and Answers (2023)
• JavaScript Interview Questions and Answers (2023) – Intermediate Level
• JavaScript Interview Questions and Answers (2023) – Advanced Level
• CSS Interview Questions and Answers (2023)
• Commonly asked Interview Questions for Front End Developers

Front-End Development- FAQs

How can be JavaScript used in both frontend and backend?

JavaScript is used for both frontend and backend. For the dynamic changes like presenting of event on clicking the button or submission of any form JavaScript can be used in frontend. For creation of API’s and server JavaScript can be used in backend as well.

Which framework is best for frontend developement?

All the frameworks has their own features and according to the requirement we use the framework. for e.g. as a beginner a user should use Bootstrap as it shows the instant changes that is visible to eyes and it’s beginner-friendly while if there is requirement of fast and heavy application then user must use the Angular or ReactJs so that they can easily create the SPAs and fastest web pages.

Is ReactJs framework or librray?

ReactJs is a library for building user interface, which provides specific tools and capabilities for building user interface and it does not provide any strict rule for project structure. Also it can be intergrated to other projects and can be used with other libraries alongside. while a framework provides a proper project structure, how a data flow should occur etc.

How can i use CSS in HTML?

There are 3 methods to include CSS into HTML file.

• First, we can use inline CSS and add styling to element itself.
• Second, we can use style tag in head section of HTML file and can use css on that for specific element.
• Third, we can create a separate file of css and then we can include it using link tag in HTML file.

Can we use CSS and Bootsrap simultaneously?

Yes, You can use both. As, CSS will not be on priority, if you want to change something other than bootstrap’s class then you have to use “!important” before specifying css.