Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine Node.js uses an event-driven, asynchronous non-blocking I/O model Node.js operates on a single thread event loop.
js: Type. Javascript is a popular programming language and it runs in any web browser with a good web browser. On the other hand, Node. js is an interpreter and environment for the JavaScript with some specific useful libraries which JS programming can be used separately.
In its most basic form Node. js is best suited for this type of computing. All I/O in Node. js is non-blocking and it allows other requests to be served while waiting for a particular read or write to complete.
Today, the Linux Foundation has announced that Node. js and io. js will officially merge codebases under a new entity: the 'Node Foundation.
What are the differences?
io.js:
This repository began as a GitHub fork of joyent/node where contributions, releases, and contributorship are under an open governance model.
We intend to land, with increasing regularity, releases which are compatible with the npm ecosystem that has been built to date for node.js.
Node.js:
Node.js
It was primarily split for three reasons: faster, more active releases and development towards a 1.0.0
release, for a more community-driven development rather than the Advisory Board, and the use of semver for releases.
The Advisory Board was Joyent's plan to bring Node.js a more centralized, faster way to plan development and plan future features along the road towards a 1.0.0
release. This was planned to be done by putting together a board of larger companies that use Node.js
Quote from Joyent's blog:
As the community becomes more complex, it is important that we find ways to balance the needs of all constituents and provide a platform for these organizations to come together and to provide input into the project.
Previously, Node.js was run via mailing lists, GitHub issues, and anyone could contribute their idea. This idea started getting some hate because it brought control away from your average, everyday contributor and moved the power to the "big shots": companies such as Walmart, Yahoo, IBM, Microsoft, Joyent, Netflix, and PayPal.
In fact, there are practical differences between Node.js and io.js. Some facts forgotten by other answers:
Why? Because io.js 1.6.2 ships with Google V8 4.1.0.25, and Node.js 0.12.1 ships with V8 3.28.73. Also, flags for ECMAScript 6 are different between Node.js and io.js. io.js's guide to ECMAScript 6 flags can be found here.
The io.js website says: "io.js is a node & npm compatible javascript platform." It's a set of tools (a runtime/VM, a package manager, etc.) which is compatible with what currently exists as node. Any differences will presumably be in the underlying implementation, and any extensions that io.js adds beyond the node.js feature set.
(Why would something compatible with what already exists divide the community? Why's that a bad thing?)
Note that io.js hasn't even been released yet! However the io.js roadmap illustrates some particularly relevant differences between node and io.
So as I understand it, io.js is the 1.0-alpha1 and future release of node, but with:
io.js was a fork of node.js. But now io.js and node.js again collaborate. So that's why node.js directly jump from 0.12.x directly to 4.0.0 as node.js version 4.0.0 includes all the major updates from io.js version 3.0.0
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