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Introduction to the JavaScript language

In this introduction to the JavaScript language we discover one of the programming languages that has changed the concept of understanding the Web. The added value of JavaScript to the HTML code is to make the Web page dynamic in its interactions with the user. JavaScript is a client-side web programming language. Web 2.0 was born with the JavaScript language.

The advantages of the JavaScript

JavaScript or "JS" in its abbreviated form; is the most widely used client-side scripting language on the web.
The advantage of the JavaScript is that it can be interpreted by almost all browsers; while what has allowed a strong expansion is the availability of many frameworks and libraries that can be easily integrated into scripts.
The language is unique in its kind for data exchange thanks to the asynchronous AJAX (Asynchronous JavaScript and XML) functions that allow you to interact with users without reloading web pages and to exchange data in JSON (JavaScript Object Notation) format.

Introduction to JavaScript language

JavaScript is a scripting language that must be inserted between the markers of an HTML file and allows us to interact with the elements of the DOM in the Browser; it can also be called externally like CSS style sheets. With JavaScript we can:
  • Send asynchronous requests to the server without reloading the web page.
  • Make calculations in real time.
  • Change the graphic aspects of a page in run time.
  • Check that the data is correct before sending to the server.
  • Animate the elements that make up a page.
Of course these are just some of the things you can do in JavaScript. The difference is that compared to other "server side" programming languages such as PHP; everything is done without the code first having to be sent to the server to be processed.

Brief historical references

It was born as (Live Script) and then later rethought as JavaScript; in 1995 by Netscape in version 2.0 for the Browser.
In 1997 the European Computer Manufacturers Association released ECMA-262, an extension of JavaScript to be processed on the server side; modeled on the basis of the JavaScript language.

Rebirth of JavaScript

The success and affirmation of the JavaScript language among those who have made the history of information technology has been put at risk with the release of technology (Flash, ActiveX and Java Applets); before rising from its ashes with AJAX and JSON.

Introduction to the JavaScript language
Ranking of the JavaScript programming languages

Learn JavaScript

After this brief introduction to the JavaScript language it is easy to understand the future prospect of convenience and immediately start a course of study.
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