The Internet, The Web and Electronic Commerce

Javascript.

- JavaScript is the most popular scripting language on the internet, and works in all major browsers, such as Internet Explorer, Firefox, Chrome, Opera, and Safari.

- JavaScript was designed to add interactivity to HTML pages.

- JavaScript is a scripting language.

- A scripting language is a lightweight programming language.

- JavaScript is usually embedded directly into HTML pages.

- JavaScript is an interpreted language (means that scripts execute without preliminary compilation).

- Everyone can use JavaScript without purchasing a license. 

Applets.

- An applet is a program written in the Java programming language that can be included in an HTML page, much in the same way an image is included in a page. When you use a Java technology-enabled browser to view a page that contains an applet, the applet's code is transferred to your system and executed by the browser's Java Virtual Machine. Applets are used to provide interactive features to web applications that cannot be provided by HTML alone. They can capture mouse input (like rotating 3D object) and also have controls like buttons or check boxes. In response to the user action an applet can change the provided graphic content. This makes applets well suitable for demonstration, visualization and teaching. There are online applet collections for studying various subjects, from physics to heart physiology. Applets are also used to create online game collections that allow players to compete against live opponents in real-time.

Filters.
- Computer filters are software programs designed to protect a computer system. They come in two main varieties: parental control filters, which block access to sites or categories of sites from a particular computer, and anti-virus filters, which prevent dangerous software from infecting the protected computer. Computer filter programs are especially useful for parents. They can block websites, monitor email traffic, block file sharing or chat systems, and even limit the length of time of an Internet session. Most filters come with default settings that are especially good at blocking access to pornographic websites. 

Desktop filter.

Plug-ins.
- In computing, a plug-in is a set of software components that adds specific functions to a larger software application. If supported, plug-ins enable customizing the functionality of an application. For example, plug-ins are commonly used in web browsers to play video, scan for viruses, and display new file types.

 Internet Security Suite.
- The means used to protect Web sites and other electronic files from attack by hackers and viruses. The Internet is, by definition, a network; networks are open, and are thus open to attack. A poor Internet security policy can result in a substantial loss of productivity and a drop in consumer confidence. The essential elements of Internet security are constant vigilance the perfect Internet security system will be out of date the next day; a combination of software and human expertise security software can only do so much, it must be combined with human experience; and internal as well as external security many security breaches come from within an organization.

File Transfer Protocol(FTP).
- The protocol for exchanging files over the Internet. FTP works in the same way as HTTP for transferring Web pages from a server to a user's browser and SMTP for transferring electronic mail across the Internet in that, like these technologies, FTP uses the Internet's TCP/IP protocols to enable data transfer. FTP is most commonly used to download a file from a server using the Internet or to upload a file to a server (e.g., uploading a Web page file to a server).

Wiki.
- Wiki is a piece of server software that allows users to freely create and edit Web page content using any Web browser. Wiki supports hyperlinks and has a simple text syntax for creating new pages and crosslinks
between internal pages on the fly. Wiki is unusual among group communication mechanisms in that it allows the organization of contributions to be edited in addition to the content itself. Like many simple concepts, "open editing" has some profound and subtle effects on Wiki usage. Allowing everyday users to create and edit any page in a Web site is exciting in that it encourages democratic use of the Web and promotes content composition by nontechnical users. For example, Wikipedia. 

 URL.
- Also known as Uniform Resource Locator, the global address of documents and other resources on the World Wide Web. The first part of the address is called a protocol identifier and it indicates what protocol to use, and the second part is called a resource name and it specifies the IP address or the domain name where the resource is located. The protocol identifier and the resource name are separated by a colon and two forward slashes.