Most full-stack developers have accumulated many years of experience in a variety of different roles, giving them solid grounding across the entire web development spectrum. Web developers are proficient in both frontend and spain number data backend languages and frameworks, as well as servers and server environments. They are knowledgeable in business logic and user experience.
Mobile Developers
Web developers may also specialize in developing mobile applications, both on iOS and Android.
iOS developers create apps that run on the iOS operating system — the one that runs on Apple devices. iOS developers are fluent in Swift, the programming language that Apple created specifically for its apps.
Android developers build apps that are compatible with all Android devices, such as Samsung smartphones . Java is the official language of Android.
5. Programming languages, libraries and frameworks.
In order to build websites and apps, what does a web developer do? They work with languages, libraries, and frameworks. Let’s take a look at each of these in detail, as well as other tools that web developers use in their day-to-day work.
What are languages?
In the world of web development, programming languages are the building blocks that programmers use to create websites, apps, and software. There are different types of languages, but programming languages follow the same pattern: markup languages, style sheet languages, and database languages.
Programming languages
A programming language is essentially a series of instructions and commands that tell the computer to produce a certain output. Programmers use so-called “high-level” languages to write source code. High-level languages use logical words and symbols, making them easier for people to read and understand. High-level languages can be classified as either compiled or interpreted languages.
C++ and Java, for example, are compiled high-level languages; they are primarily saved in a text format that is understandable to humans but not to computers. In order for a computer to run the source code, it must be converted to a lower-level language, i.e. machine language. Compiled languages tend to be used to create software applications.
Interpreted languages such as Perl and PHP do not need to be compiled. Instead, source code written in these languages can be run through an interpreter — a program that reads and executes code. Interpreted languages are often used to run scripts, such as those used to generate content for dynamic websites.
“Low-level” languages are those that can be directly recognized and executed on computer hardware; they do not require interpretation or translation. Machine language and assembly language are some common examples of low-level languages.
Some of the most popular languages used in 2018 include Java, C, C++, Python , C#, JavaScript, PHP , Ruby , and Perl .
Markup Languages
Markup languages are used to specify the text format of a file. In other words, a markup language tells the software that displays the text how the text should be formatted. Markup languages are completely readable to the human eye — they contain standard words — but the markup tags are not visible in the final output.
The two most popular markup languages are HTML and XML. HTML stands for HyperText Markup Language and is used to create websites. When applied to a plain text document, HTML tags describe how the document should be displayed in a web browser. To understand how HTML works, let's take an example of bold tags (to make a word bold). The HTML version would be written like this: <b> make this sentence bold<b> When the browser reads this, it will display the sentence in bold. This is what the user will see:
Make this sentence bold
XML stands for eXtensible Markup Language. It is a markup language very similar to HTML; therefore, while HTML was designed to display data with a focus on how it appears, XML was designed to simply store and transport data. Unlike HTML, XML tags are not predefined; rather, they are created by the author of the document. The purpose of XML is to simplify data sharing and transport, platform changes, and data availability, as it provides independent means of storing, transporting, and sharing data.
