Node.js small code tutorials for Beginners.
It is a an open source server enviroment which user JavaScript on the server. It uses asynchronous programming.
Let's deal with it using an example. A common task on web server is to open a file on the server and return to the client.
Here is how PHP and ASP will handle it:
- Sends the task to the computer's file system.
- Waits while the file system opens and reads the file.
- Returns the content to the client.
- Ready to handle the next request.
Here is how Node.js handles a file request:
- Sends the task to the computer's file system.
- Ready to handle the next request.
- When the file system has opened and read the file, the server returns the content to the client.
It eliminate the wait time here. Hence, is memory efficient.
- It can generate dynamic page content
- It can create, open, read, write, delete, and close files on the server
- It can collect form data
- It can add, delete, modify data in your database
NPM is a package manager for Node.js. It hosts thousands of packages to download. It is similar
to pip.
Say you want to download a package named lower-case
npm install lower-case
And that's all you have to do to use a module in Node.js.
Pretty simple huhh!
This intro part is taken from https://www.w3schools.com/nodejs/nodejs_intro.asp.