Use Node.js to Extract Data from the Web for Fun and Profit. Need to automate pulling some data from a web page?
I recently needed to be able to crawl a (modestly) large number of pages and sift through them looking for patterns. I have a guilty pleasure. If you don’t already have Node.js installed or haven’t updated it in a while. Npm install cheerio Once Cheerio has been installed, we can get down to business. Node download.js Lets look at the code for this example inline. This will download the contents of the specified URL and print it to the console. Nodeschool.io. An Absolute Beginner's Guide to Node.js.
There's no shortage of Node.js tutorials out there, but most of them cover specific use cases or topics that only apply when you've already got Node up and running.
I see comments every once and awhile that sound something like, "I've downloaded Node, now what? " This tutorial answers that question and explains how to get started from the very beginning. What is Node.js? A lot of the confusion for newcomers to Node is misunderstanding exactly what it is. The description on nodejs.org definitely doesn't help. An important thing to realize is that Node is not a webserver. Installing Node Node.js is very easy to install. I've Installed Node, now what? Once installed you'll have access to a new command called "node" . $ node > console.log('Hello World'); Hello World undefined In the above example I typed "console.log('Hello World')" into the shell and hit enter.