What front-end development is, and where to start

When we first meet a new object or setting, we take it in visually, and what we see assembles into a single impression. Tech is the same: when we come to new software or a new application, the first thing we interact with is its outward shell, the front-end part of the product. And often that first impression decides whether we will use it at all.

The specialist who makes a tech product's outward presentation correct and visually appealing is the front-end developer. They are responsible for building the user interface of websites and applications and for making the design comfortable to use.

Within a tech company, a front-end developer is also the link between the designer and the back-end developer, and works closely with both. From the graphic mockup the designer produces, the interface is brought to life through the front-end developer's code. Front-end specialists also make the interface work with the server, so that data displays correctly and the experience is as comfortable as possible.

A front-end developer's main responsibilities

The work can certainly not be called routine. This is a profession where creativity meets modern development technology. The tasks are varied and unlike one another, which lets a specialist show every side of their competence. To understand better what a front-end developer deals with day to day, here are the main functions:

• Building web pages, turning the mockups produced earlier into a finished interface;
• Making the design responsive so that products display correctly on every kind of device: computers, tablets and phones;
• Implementing interactive features so that the interface is friendly to the user and does everything it promises — buttons, forms, pop-ups and animations;
• Testing the interface to remove defects and make sure it works across browsers;
• Working with back-end development so that data integrates correctly.

The technologies used in front-end development

Modern front-end development is a synergy of core languages, frameworks, libraries and utilities. All of these work together to turn design mockups into complete web applications. Here are the key technologies interfaces are built on.

1. HTML (HyperText Markup Language) — the markup language used to build the structure of a web page. It determines which elements a page will have: headings, text, images, links, tables and much else. HTML is the foundation of any web document, setting out its skeleton. Thanks to its versatility and simplicity it remains a key tool in front-end development.
2. CSS (Cascading Style Sheets) — the style language used to present web pages. With it you set colours, fonts, spacing and sizes, along with animations and responsive design. CSS separates a site's appearance from the structure defined in HTML, making pages visually appealing and comfortable to use. It is the key tool for the aesthetics of a web interface.
3. JavaScript — the programming language that adds interactivity and movement to web pages. It lets you implement pop-ups, dynamic data updates, animations and the handling of user actions. It is what turns static pages into interactive applications.
4. Frameworks and libraries. Modern projects often use tools that make working with code easier. The most popular:
   * React — a library for building user interfaces;
   * Vue.js and Angular — frameworks for building complex applications.
5. Build systems — Webpack, Parcel and others help optimise code and improve a site's performance.

JavaScript deserves a section of its own, since it is the tool that matters most in becoming a capable front-end specialist.

What JavaScript brings

For beginners it matters to learn the basic concepts: working with the DOM, handling events, writing functions and using the browser APIs. After that you can move on to building small projects such as interactive forms or single-page sites.

JavaScript is a language that keeps developing and improving. If you want to become a successful front-end developer, learning it is the first step towards a career in tech.

Beyond its main advantages — its dynamism, since JavaScript lets you update data on a page without reloading it, which makes a user's interaction with a web application smoother, and the wide choice of tooling, since a great many frameworks and libraries such as React, Vue.js and Angular exist for it, making development easier and letting you build complex interfaces — a few further capabilities deserve mention:

• Reactivity and instant response: JavaScript lets you respond immediately to a user's actions — button presses, cursor movement, typing — without reloading the page. That improves the interaction and makes the experience smooth.
• Dynamic data integration: JavaScript lets you bring data from various sources, whether APIs or databases, straight into the interface. That matters particularly when building complex web applications such as dashboards and interactive tables.
• A modular approach: modern JavaScript frameworks such as React and Vue.js use a component architecture that lets you build interfaces out of separate modules, which makes the code easier to maintain and to scale.
• Working offline: with service workers, JavaScript lets you build applications that work without a network connection, storing data locally. That opens the way to progressive web applications.
• Customising browser behaviour: JavaScript gives a developer control over the browser — intercepting events, managing browser history, changing the URL dynamically without a reload, as in single-page applications.

JavaScript undoubtedly won its popularity not only through the advantages above but because it is comparatively easy to learn, which attracts a great many people beginning their road into tech.

The skills a front-end developer needs

Success in front-end development comes from a combination of technical and soft skills. It matters to develop in several directions at once, which together create a competitive advantage in the market. The basic set of skills covers:

• The technical foundation — HTML, CSS and JavaScript.
• Experience with frameworks and libraries (React, Angular, Vue.js).
• The ability to work with version control systems such as Git.
• Attention to detail and an understanding of UX/UI fundamentals.
• The ability to work in a team and understand what everyone else in the process is doing.
• A creative approach to standard problems.

Demand for front-end developers keeps rising steadily, as companies work to improve their digital presence and offer new interactive services. The field offers a great deal of room to grow, from work at startups through to leading positions at large tech companies.

Front-end plays as important a part as back-end in building any tech product today. Front-end development is an excellent choice for anyone who wants to do more than write code — who wants to bring something of their own to the process and see the result of their work in front of them. If you want to learn this sought-after profession, start with the fundamentals and practise on real projects. Together, that will open the door into tech.

You can learn front-end development at PASV on the Full Stack Developer course, where experienced mentors will help you master modern technology and pick up a profession the market wants.