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JavaScript


JavaScript is a programming language that allows you to implement complex things on web pages — every time a web page does more than just sit there and display static information for you to look at — displaying timely content updates, or interactive maps, or animated 2D/3D graphics, or scrolling video jukeboxes, etc. — you can bet that JavaScript is probably involved.

It is the third layer of the layer cake of standard web technologies, two of which (HTML and CSS) we have covered in much more detail in HTML5 and CSS3 courses here at Progra Training.

JavaScript is a cross-platform, object-oriented scripting language. It is a small and lightweight language. Inside a host environment (for example, a web browser), JavaScript can be connected to the objects of its environment to provide programmatic control over them.

JavaScript contains a standard library of objects, such as Array, Date, and Math, and a core set of language elements such as operators, control structures, and statements. Core JavaScript can be extended for a variety of purposes by supplementing it with additional objects; for example:

  • Client-side JavaScript extends the core language by supplying objects to control a browser and its Document Object Model (DOM). For example, client-side extensions allow an application to place elements on an HTML form and respond to user events such as mouse clicks, form input, and page navigation.
  • Server-side JavaScript extends the core language by supplying objects relevant to running JavaScript on a server. For example, server-side extensions allow an application to communicate with a database, provide continuity of information from one invocation to another of the application, or perform file manipulations on a server.

HTML 5 was adopted by the new working group of the World Wide Web Consortium (W3C) in 2007. This group published the first public draft of HTML 5 in January 2008. As of now, HTML5 is in the "Call for Review" state, and the W3C expects that it will reach its final state by the end of 2014.

In addition to the pure JavaScript course, we added some extensions for you to learn about some different libraries and frameworks, like: Angular 1 and 2 and Reactjs.


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