|Language:||English, Spanish, Hindi|
|Genre:||Children & Youth|
|Distribution:||Free* [*Sign up for free]|
The simplest way is to use the readline-sync package which is very similar in terms of the API and handles this out of the box.
A more complete and abstract solution is provided by the Inquirer. Expose functionality from a Node. A Node. In this file, functionality must be exposed before it can be imported by other files.
Any other object or variable defined in the file by default is private and not exposed to the outer world.
This is what the module. As such, it can be imported in other parts of your app, or in other apps as well. You can do so in 2 ways.
The first is to assign an object to module. The first exposes the object it points to. The latter exposes the properties of the object it points to.
Introduction to npm npm means node package manager. In January over , packages were reported as being listed in the npm registry, making it the biggest single language code repository on Earth, and you can be sure there is a package for almost!
It started as a way to download and manage dependencies of Node. There are many things that npm does.
Downloads npm manages downloads of dependencies of your project. Installing all dependencies If a project has a packages. Updating packages Updating is also made easy, by running npm update npm will check all packages for a newer version that satisfies your versioning constraints.
There are an Active and vibrant community for the Node. Because of the active community, there are always keys updates made available to the framework.
This helps to keep the framework always up-to-date with the latest trends in web development. Who uses Node.
Below is a list of a few of them. Paypal — A lot of sites within Paypal have also started the transition onto Node. LinkedIn - LinkedIn is using Node. Mozilla has implemented Node. Good for collaborative environment — This is good for environments which manage document. In document management environment you will have multiple people who post their documents and do constant changes by checking out and checking in documents.
So Node. Advertisement servers — Again here you could have thousands of request to pull advertisements from the central server and Node. Streaming servers — Another ideal scenario to use Node is for multimedia streaming servers wherein clients have request's to pull different multimedia contents from this server.
This callback is executed each time a request is received. The two arguments of createServer method are request : which contains all the information related to client's request such as URL, custom headers , client info , etc. Along with that we can also send one response using this. In the above section we used response. Now Let's see how we can serve a string in an http server in node.
In most of the cases , we serve html files via the node. So let's see how we can serve a html file using node. So , let's see how we can serve JSON in a node.