When Node.js performs an I/O operation, like reading from the network, accessing a database or the filesystem, instead of blocking the thread and wasting CPU cycles waiting, Node.js will resume the operations when the response comes back.
This allows Node.js to handle thousands of concurrent connections with a single server without introducing the burden of managing thread concurrency, which could be a significant source of bugs.
In Node.js the new ECMAScript standards can be used without problems, as you don't have to wait for all your users to update their browsers - you are in charge of deciding which ECMAScript version to use by changing the Node.js version, and you can also enable specific experimental features by running Node.js with flags.
Node.js tutorials will help you learn the essentials of Node.js starting from the basics to an advanced level. These tutorials are broken down into sections, where each section contains a number of related topics that are packed with easy to understand explanations, real-world examples, useful tips, informative notes, and "points to remember" section.
These tutorials are designed for beginners and professionals who want to learn Node.js step by step.