A returning subject on this blog, how to automate device screenshots with Node.js and Chrome. This post will cover installation and running the script on either Mac OS or Linux. If you’re brave, you can use Windows too 😉
Few weeks ago we decided to switch our static site to GHOST and write a theme for it. Now, GHOST isn’t an optimal choice for a photography portfolio and we’ll get into why that’s the case in a bit, but we both like blogging to, so we wanted to give it a shot.
This post is going to be about creating an authentication with JSON Web Tokens for your project, presumably an API that’s going to be used by Angular, Vue.js or similar frontend frameworks. We’re going to send the jwt with every request, meaning that we don’t rely on sessions, but simply put the token on every request we make to the API. This way you don’t have to worry about cookies, but you can save it in
localStorage or other places on the frontend.
In essence this tutorial will go through:
- creating a
/loginroute to acquire a token
- creating a
/secretroute, that only is available to logged in users with a JSON web token
If you’re curious about the final result and don’t want the step by step guide, check out the final jwt express gist.
This post is going to be about crawling an entire domain in Node.js. You can find the first posts of the series here: Web Scraping / Web Crawling Pages with Node.js.
For testing purposes I have created a simple set of HTML pages, that should resemble a generic website. It has some page and we want our crawler to go through them and make sure it finds all of them, where they’re linked. That means when our crawler hits a page, it should keep track of the links it finds and then only proceed to pages it has not crawled yet.
Welcome to part 2 of the series crawling the web with Node.js. In this article we’re going to have a look at what valuable content we can grab from a page. Important parts when writing a crawler are obviously links, because our crawler wouldn’t know where to go next without them.
The data I’m going to extract from a page are not necessarily the ones you’ll want and it really all depends what you want with the project. Maybe you only want the content of specific tags or status codes. I’ll just put up some examples and you can see from there what’s possible and see what would make sense for your purpose.
This post series is going to discuss and illustrate how to write a web crawler in node.js. I’m going to write some posts on a topic that are database agnostic and the database part split up into the respective different databases you could imagine using.
Express.js is one of the most popular node.js frameworks for serving websites or building APIs. This article is about how to enable Cross Origin Resource Sharing, also known as CORS. For that we need to set the correct headers in the response, which allow a browser to make use of the data from any domain.
io.js is a node.js fork that just has been released in version 1.0 to strenghten community efforts, bring ES6 features to the node eco system quicker and speed up the development. Continue reading “Installing io.js on Ubuntu or a Digital Ocean Droplet”
Building your own tools makes you a better programmer. Seriously. There is nothing more satisfying than the feeling of pressing a single button instead of doing some annoying job that you used to do before by hand and YOUR program or script runs off to do all your work for you and then it says:
All done, task took 35 milliseconds
NodeBB is a Node.js based forum software that has gained a lot of traction in the first year of its existance. It’s making use of socket.io to communicate between client and server in real time. This means that the whole experience of using a forum gravitates towards the feeling of a chat, with the benefits of only tuning in on topics that interest you. Continue reading “Node.js based Forum: NodeBB”