Then Node.js was spawned, turning developers’ heads with its speed. Not only was JavaScript faster on the server than anyone had expected, but it was often faster than Java and other options.

Node.js is generally accepted and understood by both Java and .Net camps, whose developers are comfortable with JavaScript syntax and are able to deploy Node.js on both Unix and Windows ...

PayPal has decided to use JavaScript from browser all the way to the back-end server for web applications, giving up legacy code written in JSP/Java.