RxDB A realtime Database for JavaScript Applications RxDB (short for Reactive Database) is a NoSQL-database for JavaScript Applications like Websites, hybrid Apps, Electron-Apps and NodeJs. Reactive means that you can query the current state and subscribe to all state-changes, such as the result of a query or even a single field of a document. This is useful for UI-based apps...
Functional Programming is an old paradigm, but relatively new to many programmers. In this course you will explore how to take advantage of the power that comes with thinking declaratively. The course is taught by Senior Engineers with several years of experience in front end and full stack applications. This is a 6 hours course....
Few imagined that the one-time toy language would become a professional platform If you predicted in 1999 that, 20 years later, JavaScript would become one of the world’s most popular languages, you were either enjoying a psychic vision or you were slightly insane. Not only was turn-of-the-century JavaScript unable to do what a professional language...
Let’s be honest. A lot of JavaScript code sucks. Change that! JavaScript is a force to be reckoned with. It is the single most widely-used programming language in the world. Its simplicity and the abundance of learning resources make it approachable for beginners. Large talent pools make JavaScript appealing to companies of all sizes. A...
Do you want to learn the fundamentals of Vue so you can start creating apps right away? Join us and you’ll learn Vue from the ground up including how to display data, capture user interactions, create components, communicate across components, debug your app, add in plugins, and so much more. This one day workshop is for developers who have not started...
Now a days Javascript frontend framework expanded like never before. Current battle ground are topped by most 3 popular JS Angular, ReactJS and VueJS. % of developer impression on React, Vue, Angular. According to survey, data from developer review ReactJs has win the developers heart. Vuejs and Angular got tied on 2nd. You can find the survey...
TypeScript is a relative newcomer to the JavaScript field, and is a promising addition to JavaScript programming. The value proposition is adding some rigor, type checking and other compile-time checks, that have been lacking in JavaScript. Checks like these should help us write more robust code, especially in large applications. This is an excerpt from Quick...
Functional programming is a great discipline to learn and apply when writing JavaScript. Writing stateless, idempotent, side-effect free code really does solve a lot of problems: It’s easier to test It’s easier to debug It’s easier to reproduce issues But there’s a growing impression in the community that functional programming is an all-or-nothing practice. It’s...
If you have been using JavaScript for a few years, you are probably familiar with this syntax: function addTen(num){ return num + 10; }); console.log(addTen(10)); //20 This function syntax was popular in ES5, or ECMAScript 5. There is one major advantage to this syntax: It includes the word function, so it is obvious that you...
Javascript is a single threaded asynchronous language. What does that mean? It means it cannot multi-task, but can pause execution of one task to do something else and switch back and forth between tasks so as to maximise performance. It makes sense because javascript is a browser language, and browsers need to make network calls...
Most people’s first programming language is a dynamically typed, interpreted language – JavaScript, Python or Ruby. These are excellent languages to learn programming with, and you can be very productive with all three of them. But there’s a separate category of languages in widespred use: statically typed, compiled languages – C, Go, Java, C# and...
37.1. A roadmap for asynchronous programming in JavaScript 37.1.1. Synchronous functions 37.1.2. JavaScript executes tasks sequentially in a single process 37.1.3. Callback-based asynchronous functions 37.1.4. Promise-based asynchronous functions 37.1.5. Async functions 37.1.6. Next steps 37.2. The call stack 37.3. The event loop 37.4. How to avoid blocking the JavaScript process 37.4.1. The user interface of the browser can be blocked 37.4.2. How can we avoid blocking the...
Disclaimer: Hacking is a difficult skill to learn. You will not become a good pentester by just doing a few online courses. You will not become a good pentester by just installing Kali Linux and learning how to use the tools. This is a challenging path, wrought with endless frustrations, and you will not learn...
Dynamic imports are great, they’ve been out there for a while and presume many improvements in the way we treat modules/components. In this article, I’m going to be explaining how they work, why they’re so good and some of the things we could accomplish by using them. If you read my previous article about factory pattern...
…. and why we need it more than ever Front end technology, especially JavaScript, has historically been looked down upon by back end veterans as not being a proper language. Mostly because JavaScript started off as function based language — making it immature in the ways of potential growth and what it can do. I remember back...
Out of all major web technologies, there is no other technology as vilified for cross browser compatibility as JavaScript. But even after striding advancements in pure HTML and CSS, you it’s true that you cannot easily build webapps or websites without it. In our previous post last week, we delved in detail on cross browser compatibility issues faced in...
This post is taken from my blog so be sure to check it out for more up-to-date content 😉 If you’re new to programming or you’re just a hobby programmer and haven’t ever done any kind of open source project then you might feel a bit skeptical about the idea of testing your code. If you indeed are, then...
Anytime we go into a project, existent or newly created, we always think about how what we’ll build can be more manageable, scalable and and easy to test. This is where using Dependency Injection can come in handy for us. But first, what do we mean by Dependency Injection? It is a software design pattern that...
Lessons we have learned from maintaining large JavaScript applications in the long term. At our agency, a client project typically lasts a couple of months. From the first client contact and the design phase to the implementation and the initial launch, a project roughly takes half a year. But sometimes we develop and maintain a particular...
this is of course the source of much confusion in JavaScript. The reason being that this depends on how the function was invoked, not where the function was defined. JavaScript without this looks like a better functional programming language. this losing context Methods are functions that are stored in objects. In order for a function to know on which object to...
