Learn Use JavaScript and Node.JS

About Learn Use JavaScript and Node.JS

JavaScript is a quirky, object-oriented, C-like language. It's the only choice for developing applications in the browser, with a new framework introduced every week to woo developers. And with Node.js, JavaScript has spilled over to the server. Competing implementation teams have driven JavaScript interpreters forward, so that Google's V8 engine is respectably fast -- fast enough to reside at the core of Node.js.

JavaScript also has the internal capability to handle the event loop mechanism in a straightforward way. Other languages have this capability, which are used by their own evented systems. Python has Twisted and Ruby has EventMachine. But because of history, both of those event-loop systems come freighted with relatively easy ways to make a particular kind of performance mistake, while JavaScript remains relatively free of this peril.

JavaScript also runs across many OS environments, having historically had to support them in the browser. This, along with the libuv library to help abstract away some of the operating system differences, means that Node.js has a broad footprint.

But the biggest force for JavaScript's migration to the server side is human. Programmers have to do less mental context-switching between a Web browser and the server. There are even efforts to unify the environments between client and the server so that code can run equally well in either location, further simplifying the model and leading to increased productivity.

If you know JavaScript, Node.js is a gentle on-ramp to asynchronous computing for the Web. And it just so happens that Node.js is suited to solve Web problems exactly of this type: integration and glue challenges, with cascading calls to API after API.

Main features Node.JS:
- Asynchronous and Event Driven – it means that API call doesn't wait for results and doesn't block other calls. After it finish executing it will run an callback or notify about certain execution parts using events. Even though Node.js is running on single thread with event looping, it can handle more requests than, for example Apache HTTP server, because of using asynchronous non-blocking way of handling code execution.
- It's (very) fast – it's based on Google Chrome's V8 JavaScript Engine, which is very fast in executing JavaScript code..
- High scalability - Thanks to the event mechanism Node.js can be easily scalable.
- NPM (The Node Package Manager) - it's a tool that handles installing and updating of reusable modules from online collection. It also takes care of version and dependency management of reusable modules from online collection. NPM can be compared to Ruby Gems.
- Community - there are a lots of community tutorials, resources or shared code. Node,js is very popular now and it became one of most of used technolgies used nowadays.

JavaScript and Node.JS Tutorial App from Tutorials Point is an easy-to-use, user-friendly platform to learn JavaScript and Node.JS, both at the fundamental and advanced level. Become a JavaScript developer Learn Use JavaScript and Node.JS Offline App today!.

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