What is JavaScript….?
What is JavaScript?
JavaScript is a widely used programming language language in the world right now .And it is a fastest growing programming language.
JavaScript is a light-weight object-oriented programming language and it is used by several websites to script the webpages .
What can you do with JavaScript?
JavaScript is used to create interactive websites .And also you can build,
- Web Applications
- Mobile Applications
- Realtime networking apps
- Games
- Command line tools
History of JavaScript
In September 1995, Netscape programmer named Brandan Each developed a new scripting language .He only took 10 days to do that .Firstly he called it ‘Mocha’ .But after is was known as ‘LiveScript’ .But finally it was renamed as ‘JavaScript’
Run time Environment
JavaScript only runs inside a browser .Every web browser has it’s own JavaScript engine which can execute JavaScript in it .For an example, Firefox has it’s own engine ‘Spidermonkey’ and Chrome has it’s own ‘V8’ engine.
Node
In 2009, a cleaver engineer named Ryan Doll took open source V8 engine from Chrome and embedded it in C++ program and called it Node .So now JavaScript can be run outside of a browser and in the Node. So with Node we can build backend for web and mobile applications.
