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JavaScript Definition

Introduction of JavaScript

Javascript is a High level, cross platform, Light weight, platform-independent and interpreted client side scripting language. But Secondarily, JavaScript is used on server-side, Node.js allow developers to run JavaScript server-side, and in mobile with React Native and Apache Cordova, and in desktop with Electron. All other uses of JavaScript are insignificant.

It is a simple language built into Netscape 2.0 and greater.

JavaScript is primarily used to make web pages more interactive and user- friendliness of JavaScript not only supports web pages but also supports external applications like: Running widgets, PDF documents, supporting for flash applications etc.

JavaScript’s syntax is heavily inspired by Java and C++. If you have experience in Java and C++, JavaScript’s syntax will seem familiar to you.

It is supported by most web browsers including Chrome, Safari, Firefox, Opera, Internet Explorer, Edge etc.

Note : Web pages are not the only place where JavaScript language is used , many desktop and server programs use JavaScript. Node.js is known for server-side and Some databases, like CouchDB and MongoDB, also use JavaScript as their programming language.

Important point's of JavaScript :

  • JavaScript is an interpreted language not a compiled language, it doesn't need to be compiled. A program such as C, C++ or Java needs to be compiled before it is run.

  • JavaScript is interpreted at runtime by client browser, Browser passes JavaScript code through special program called interpreter.

  • JavaScript is integrated with and embedded in HTML and runs directly from the web page. It is utilized to perform tasks such as create a calendar, printing the time and date, or other tasks that are not possible through plain HTML.

  • JavaScript is used in both client-side and server-side.

  • JavaScript renders web pages in an interactive and dynamic control website content. This allowing the pages to react to events, accept variable text, exhibit special effects, validate data, create cookies, detect a user’s browser, etc.

  • There are many open source application development frameworks, which is based on JavaScript.

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