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What is JavaScript?

JavaScript is a lightweight, scripting language which helps in creating interactive web pages.

JavaScript is used to program the behavior of web pages because it can update and change both HTML and CSS. JavaScript can manipulate calculate, and validate data. It is most commonly used as a part of web pages, whose implementations allow a client-side script to interact with the user and make pages dynamic. It is an interpreted programming language with object-oriented capabilities (OOPs concept).

History of Javascript?

Lets see the important landmark in the history of Javascript:

  • <Javascript was launched by Brendan Eich in September 1995, and it took just ten days to develop this scripting language which was initially called Mocha.
  • ECMA-262 is the official name of the standard. ECMAScript is the official name of the language.
  • Netscape submitted JavaScript to ECMA (European Computer Manufacturers Association) International in November 1996.
  • It became an ECMA standard in 1997 and ECMAScript 2 was released in 1998.
  • In 1999, ECMAScript 3 was released.
  • In 2005, Eich and Mozilla joined ECMA to develop E4X Javascript.
  • In January 2009, the CommonJS project was launched with the goal of defining a common standard library.
  • In June 2011, ECMAScript 5.1 was released.
  • In June 2015, ECMAScript 2016 was released.
  • The latest version is ECMAScript 2017 which was released in June 2017.

Features of Javascript

Lets see the important landmark in the history of Javascript:

  • It is an open and cross-platform language.
  • It is used for both client side and server side but client-side mechanism provides many advantages over traditional CGI server-side scripts.
  • It is easy to learn and to start.
  • It is a dynamic language: flexible and powerful.
  • You are free to do whatever you want with any object.
  • Strong Testing Workflow
  • Added Dependencies
  • Framework Unsupported

Advantages of JavaScript

Lets see the important landmark in the history of Javascript:

  • Less server interaction − User input is validated before sending the page off to the server. This leads to less server traffic, which means less load on your server.
  • Immediate feedback to the users − Users don't have to wait for a page reload to check if they have forgotten to enter something or not.
  • Increased interactivity − You can create interfaces that react when the user activates them via the keyboard or hovers over them with a mouse.
  • Richer interfaces − You can use JavaScript to include items such as drag-and-drop components and sliders to give a Rich Interface to your site visitors.

Disadvantages of JavaScript

Lets see the important landmark in the history of Javascript:

  • Client-side JavaScript does not allow the reading or writing of files because this kept for security reason.
  • JavaScript cannot be used for networking applications because there is no such support available for this.
  • JavaScript doesn't have any multiprocessor or multi-threading capabilities.
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