Web development: a basic idea

Web development

Web development is the coding or programming that enables website functionality, per the owner's requirements. It mainly deals with the non-design aspect of building websites, which includes coding and writing markup.

Web development ranges from creating plain text pages to complex web-based applications, social network applications and electronic business applications.

Every Web Developer must have a basic understanding of HTML, CSS, and JavaScript.

Basic

In practice, many web developers will have basic interdisciplinary skills / roles, including:

• Graphic design / web design
• Information architecture and copywriting/copyediting with web usability, accessibility and search engine optimization in mind
• Mobile responsiveness

Testing

Testing is the process of evaluating a system or its component(s) with the intent to find whether it satisfies the specified requirements or not. Testing is executing a system in order to identify any gaps, errors, or missing requirements contrary to the actual requirements. The extent of testing varies greatly between organizations, developers, and individual sites or applications.

Security considerations

Web development takes into account many security considerations, such as data entry error checking through forms, filtering output, and encryption. Malicious practices such as SQL injection can be executed by users with ill intent yet with only primitive knowledge of web development as a whole. Scripts can be used to exploit websites by granting unauthorized access to malicious users that try to collect information such as email addresses, passwords and protected content like credit card numbers.

Because new security holes are found in web applications even after testing and launch, security patch updates are frequent for widely used applications. It is often the job of web developers to keep applications up to date as security patches are released and new security concerns are discovered.

Front-End development

Front-end web development is the practice of converting data to a graphical interface, through the use of HTML, CSS, and JavaScript, so that users can view and interact with that data

Back-End development

It is the server side development of a website. It receives and sends data according to the interaction user makes with the website. 

PHP, Python, Ruby, Java and Rust are some of the most essential languages for Back-End development

Framework

A web framework is a software tool that provides a way to build and run web applications.

On the CSS side you should choose a framework for reponsive web design:
Bootstrap  /  Material Design  /  W3.CSS

On the JavaScript side you should learn at least one modern framework:
React.js  /  Angular.js  /  Vue.js   /  W3.JS

Maybe the popularity of jQuery has passed the top, but it is still the most used JavaScript framework.