This time, we are going to be creating a request header parser microservice in Node.js. Keep in mind that I’ll be using a set-up similar to that used by the previous two tutorials; for those who have not read them, that means that we’ll be using Express, and code our app using ECMAScript 6 thanks to Babel.
Feel free to go though the creation of a simple Express app post, as well as the set-up for using ECMAScript 6 within your node app.
Welcome to part two of ECMAScript 6: Why Should I use it? If you missed part one, you can find it here. This time, we’ll be looking at the following features that ECMAScript 6 brings to the developer:
Today, we are going to be building a calculator app using vanilla JavaScript . No jQuery or other third party libraries/frameworks involved. I’m even going to make it more complicated by using objects and prototypical inheritance, so do not expect a quick and dirty job. Here’s a demo of what we’ll be building.
We’ll build a Calculator “class”, which will take care of the application logic. This Calculator, will have methods that we can access to pass it numbers, operations and all sorts of cool stuff that’s it.
FreeCodeCamp has recently added a few more challenges to the site. One of them is Caesars Cipher. This bonfire will have us write a function that mimics the ages old encryption method allegedly used by Romans back in the day.
It’s one of the simplest and oldest encryption methods, and works by replacing each character in a word or sentence with another one down the alphabet (based on a shift amount). For this exercise, we are told to use a shift of 13. Let me show you an example using the word dog and a shift of three.
This time, we are going to build our own Pomodoro Clock. No, this is not a Pomodoro, it’s actually a Commodore:
The Pomodoro clock has it’s own history, which is somewhat irrelevant to us at this point, but bear with me while I take you in a journey through time and space, a time of… Nevermind, it’s really just a clock. Actually, not even a clock, but a timer that allows us to set a few parameters. Namely: Pomodoro cycle time (25 min default) and break time (5 min default).
As a note, I will mention that we are not going to be using jQuery or any other library in this process. At the end of this post, you can find links to a live version of this exercise, along with an AngularJS and React version.
StartJS 