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Node News Saturday, June 30

bitbucket

  • Licensed under the MIT License.
  • Check the LICENSE file for details.

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bitbucket

New Course: Node.js From Scratch

  • You’ll learn the basic principles of Node, like the event loop and asynchronous programming.
  • Here are some free lessons from this course, as a preview of what you can expect: – – Node.js is an asynchronous environment, and it achieves asynchrony with its event loop.
  • In this video, you’ll see how to write an application that demonstrates how to write asynchronous code for the event loop.
  • You can take our new course straight away with asubscription to Envato Elements.
  • For a single low monthly fee, you get access not only to this course, but also to our growing library of over 1,000 video courses and industry-leading eBooks on Envato Tuts+.

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New Course: Node.js From Scratch

Python Application Development Using Scrapy

  • Heres the code for a spider that scrapes famous quotes from website http://quotes.toscrape.com, following the pagination: – – import scrapy – – class QuotesSpider(scrapy.Spider): – name = quotes – start_urls = [ – ] – – def parse(self, response): – for quote in response.css(‘div.quote’): – yield { – ‘text’: ‘author’:…
  • The crawl started by making requests to the URLs defined in the start_urls attribute (in this case, only the URL for quotes in humor category) and called the default callback method parse, passing the response object as an argument.
  • In the parse callback, we loop through the quote elements using a CSS Selector, yield a Python dict with the extracted quote text and author, look for a link to the next page and schedule another request using the same parse method as callback.
  • This Scrapy code below is to extract company details from Yelp into a csv file: – – import scrapy – – class YlpSpider(scrapy.Spider): – name = yelp – allowed_domains = [www.yelp.com] – start_urls = def parse(self, response): – companies = for company in companies: – name = address1 = address2…
  • address = address1 + – + address2 – phone = website = https://www.yelp.com + yield{‘Name’:name, ‘Address’:address, ‘Phone’:phone, ‘Website’:website} – – scrapy runspider scriptfilename.py -o should be enough to get you experimenting.

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Python Application Development Using Scrapy

Restart Your Node.js Apps Automatically Using nodemon

  • Enter nodemon, a CLI utility developed by @rem that wraps your Node app, watches the file system for changes and automatically restarts the process.
  • For example, if we have a simple Express server setup in a file, we can start it and watch for changes like this: – – Arguments can be passed-in the same way as if you were running the script with Node: – – Now every time a change is made…
  • test.ts suffix, executing the file ( ) with ts-node and waiting for 3 seconds to restart after a file changes: – – As you saw from the above example, adding configuration switches when running nodemon can get quite tedious.
  • For example, below are the same configurations as the above example, but placed in a nodemon config file: – – Note the use of execMap instead of the switch.
  • With this, you can simply start nodemon with the desired script: – – Alternatively, if youd rather not add a config file to your project, you can add these configurations to the file under a nodemonConfig key:

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Restart Your Node.js Apps Automatically Using nodemon

Event: DevOps Learning: CI/CD on Node.js for Agile Teams

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Event: DevOps Learning: CI/CD on Node.js for Agile Teams

Building A Pub/Sub Service In-House Using Node.js And Redis

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Building A Pub/Sub Service In-House Using Node.js And Redis

Hard-won lessons: Five years with Node.js

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Hard-won lessons: Five years with Node.js

48 Best Development Courses Online To Become An Industry Expert

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48 Best Development Courses Online To Become An Industry Expert | JA Directives

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24 Best Javascript Tutorials Courses & Training for Programmers

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24 Best Javascript Tutorials Courses & Training for Programmers | JA Directives

Top Node Courses

The Complete Node.js Developer Course (2nd Edition) (60,232 students enrolled)

By Andrew Mead
  • Build, test, and launch Node apps
  • Create Express web servers and APIs
  • Store data with Mongoose and MongoDB
  • Use cutting-edge ES6/ES7 JavaScript
  • Deploy your Node apps to production
  • Create real-time web apps with SocketIO

Learn more.


Angular (Angular 2+) & NodeJS - The MEAN Stack Guide (26,806 students enrolled)

By Maximilian Schwarzmüller
  • Build real Angular + NodeJS applications
  • Understand how Angular works and how it interacts with Backends
  • Connect any Angular Frontend with a NodeJS Backend
  • Use MongoDB with Mongoose to interact with Data on the Backend
  • Use ExpressJS as a NodeJS Framework
  • Provide a great user experience by using Optimistic Updating on the Frontend
  • Improve any Angular (+ NodeJS) application by adding Error Handling

Learn more.