It can usually take a few minutes to complete the installation. You will see periodic progress while this installs. This will install Node.js onto your CentOS system. To do this, you are going to want to use this command: sudo yum install -y nodejs Once that is finished, you will now be able to install Node.js. To do this, you are going to want to type in the command: curl -silent -location | sudo bash. Here we will want to add the Node.js repositories so that yum knows where to look for the latest Node.js when it is installing. Once that is installed, please proceed with the steps below. If you do not have curl installed, you can type this into your console: sudo yum install curl This installation guide is going to rely on the curl command. Here we will show you how to install Node.js and Node Package Manager (NPM) on your server. Modern-day, it is straightforward and easy to set up though it can still be intimidating.

Among the other amazing features that Node.js has jam-packed into itself, it is a popular choice for websites to use. Node.js is a lightweight and seemingly efficient JavaScript runtime that can be used to run JavaScript code outside of the browser. Of course, for some serious web scraping, I recommend using PhantomJS.Along with the many technologies out there, such as Ruby, Python, and PHP, you may have heard of one called Node.js. This is because, in NodeJS, everything is asynchronous, so we need to pass the url and file from the loop to a separate function:Īnother good nodeJS module for doing curl like web scraping is curlrequest. Then I did a for-loop to iterate through the array and inside the loop, I put the request function, passing the file and url parameters, and some console.log() calls to print what’s happening:Īs you can see from the output, only the second url and file was scraped.

First, I added the request and filesystem module to my script plus the array of URLs I want to scrape. Looking around, I found a great nodeJS module called request which is a small abstraction on top of http.request and makes writing my script much easier. But, I want to write the response to a file and do some looping so that I can use an array of URLs instead of just making a request to one URL. Well, looking at the nodeJS API, it’s clear that HTTP.request gives you something that looks like a Curl equivalent. If you are familiar with Curl, the command line tool for transferring data with URL syntax, you might wonder how can that be done with NodeJS.

How to install curl using node js