Summary and Perspectives

Let's see the summarizes what we have covered in this whole course.

We'll cover the following

This course covers a lot of ground. Here are some key takeaways:

  • JavaScript is a programming language created in 1995 for adding interactivity to web pages. Still the language of the web, it has also pervaded many other environments: servers, mobile devices, connected objects, etc.

  • JavaScript has been standardized under the name ECMAScript and is continuously improved. Its latest major version is ES2021.

  • JavaScript is dynamically typed: the type of a variable is deduced from the value stored in it.

  • JavaScript is a multi-paradigm language: you can write programs using an imperative, object-oriented or functional programming style.

  • JavaScript’s object-oriented model is based on prototypes.

  • When run into a browser, JavaScript can use the DOM (Document Object Model) to access and update dynamically the structure of a web page.

  • JavaScript can send AJAX calls (asynchronous HTTP requests) to exchange data with web servers or use web APIs, enabling the creation of web applications.

  • The Node.js platform, created in 2009 and built on Chrome’s V8 engine, brought JavaScript outside the browser.

  • Node emphasizes modularity. Its npm package registry is the largest ecosystem of open source libraries in the world.

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