Semalt: Web Scraping With Node JS

23.05.2018

Semalt: Web Scraping With Node JS

Web scraping is the process of extracting useful information from the net. Programmers and webmasters scrape
data and reuse content to generate more leads. A large number of scraping tools have been developed, such as
Octoparse, Import.io and Kimono Labs. You need to learn different programming languages such as Python, C++,
Ruby, and BeautifulSoup to get your data scraped in a better way. Alternatively, you can try Node.js and scrape web
pages in a large number.

Node.js is an open source platform for executing JavaScript codes. JavaScript is used for client-side scripting, and
the scripts are embedded in a site's HTML. Both JavaScript and Node.js allow you to produce dynamic web content
and scrape a large number of web pages instantly. You can collect and scrape data from dynamic sites in no time.
Consequently, Node.js has become one of the primary elements of JavaScript paradigms and the best way to extract
data from the internet.

It's safe to mention that Node.js has a well-versed architecture and is capable of optimizing different web pages. It
performs various input-and-output operations and scrapes data in real-time. Node.js is currently governed by the
Node.js Foundation and the Linux Foundation. Its corporate users are IBM, GoDaddy, Groupon, LinkedIn, Net ix,
Microsoft, PayPal, SAP, Rakuten, Tuenti, Yahoo, Walmart, Vowex and Cisco Systems.

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23.05.2018

Web scraping with Node.js:

In January 2012, a package manager was introduced for the Node.js users
named as NPM. It allows you to scrape, organize and publish web content
and was designed for particular Node.js libraries.

Node.js allows you to create web servers and different networking tools
using JavaScript and handles various core functionalities and web
scraping projects. Its modules use the APIs and are designed to reduce
the complexity of writing scripts. With Node.js, you can run data
extraction projects on Mac OS, Linux, Unix, Windows, and NonStop.

Build network programs:

With Node.js, programmers and developers mainly build large-sized network programs and create web servers to
facilitate their work. One of the major differences between PHP and Node.js is that the data scraping options of
Node.js cannot be stopped. This platform uses callbacks to signal the failure or completion of a project.

Architecture:

Node.js is known to bring event-driven programming to the web servers and enables you to develop different web
servers in JavaScript. As a developer or programmer, you can create scalable servers and scrape data with Node.js
in a readable form. Node.js is compatible with DNS, HTTP, and TCP and is accessible to the web development
community.

Different open-source libraries:

You can get bene ted from various open source libraries of Node.js. Most of its libraries are hosted on the NPM
website, such as Connect, Socket.IO, Express.js, Koa.js, Sails.js, Hapi.js, Meteor and Derby.

Technical details:

Node.js is capable of operating on a single threat. It uses non-blocking I/O calls and allows you to carry out
thousands of concurrent connections and data scraping projects at a time. It uses the Libuv option to handle your
scraping projects and asynchronous events. The core functionalities of Node.js reside in the JavaScript libraries.

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