Innhold om JavaScript

If you are well-versed in the JavasScript-universe, you probably know that functions are also objects in JavaScript. Everything you can do with regular objects and values, you can do with functions as well. You can pass them as parameters to other functions, declare them as variables or pass them around as you’d like. Since functions can be passed as parameters or returned as an output from another function, this has enabled higher-order functions to be built into the language. In this article I will demonstrate how higher-order functions have allowed me to write readable and more maintainable code with fewer bugs, and how it coincidentally completely removed the need to write for-loops in my code!

Have you ever wondered what the amazing Christmas dinner and the Event Loop in JavaScript have in common? Well, not much. But I will use the preparation of this delicious meal to make the event loop a bit more edible.

Provided I didn't miscount (I am not the Count von Count, so it's quite possible), there are 46 operators in JavaScript which are available in all modern web browsers. Many of them are inevitable (e.g. arithmetical and logical operators), while others are more uncommon. But the list doesn't end there and the family of operators is still growing. Let's have a brief look at the latest additions, and new operators which are just around the corner!

Have you ever wanted to add extra functionality to strings? With tagged template literals you can build useful templates, add logic, or write different languages inside strings. How can that be useful, and how does it even work? Dive into how tagged template literals let us build enhanced strings!

It is time to unleash the christmas spirit hiding behind that noisy fan in your computer. In this article, we will use shaders in WebGL to make animations no one could imagine in JavaScript before.

As a developer, you have surely wondered if the web can do full 3D beyond tweaking the z-index and fiddling with CSS 3D transforms. WebGL is the API for making such fully customizable visualizations in all dimensions. We can use this together with de facto standard framework three.js to unlock this mysterious domain.

Maybe you are burning inside with an idea of an NPM package that could revolutionize the world? Or maybe you just want to see what it's all about? This article will be a simple tutorial on how you can get started with creating NPM packages - which I, personally, found to be a quite useful skill to have!

The new version of ECMAScript, ES2021 is expected to be released in June 2021. What new features can we expect from the new release? This article covers some of the features in the upcoming release, and how we can put them to use.

Even today, many people shy away from JavaScript because it is seen as unreliable or unpredictable. Without strong typing and compiling, unexpected problems can arise at runtime that nobody will see until it gets uncovered as an error in a production environment.

If you have been following our JavaScript Christmas calendar, chances are you have some interest, and perhaps even proficiency, in the JavaScript programming language. For this blog entry in particular, I hope you also have at least some interest in data science and machine learning. I will demonstrate how you can use your JavaScript skills to develop entry-level data science and machine learning applications, argue why you may want to do so, and provide you with lots of external resources to further expand your knowledge of this subject.

Although I've been a professional developer for over seven years, there are still many programming terms I've yet to fully understand. I've heard the term "closures" many times, but I never really bothered to dive into the meaning of it. Maybe this is because I had a decent idea of what it was about, and I knew pretty well how to use it? It's about time I take the leap to figure this out, and finally get some closure.

Back in 2009, Ryan Dahl entered the stage on JSConf and presented his newest project, Node.js. And since then, Node has grown into an enormous ecosystem with over 1.5 million packages on NPM. 9 years later, during JSConf 2018, he enters the stage again. This time, he apologizes to the JavaScript community and discusses the 10 things he regrets about Node. Towards the end, he reveals his new project, an alternative framework for JavaScript development. The new project is called Deno. And this year, Deno finally left the alpha stage, offering a stable CLI and solid documentation. Which means it's the perfect time to have a closer look!

I'm part of a group that holds introductory courses on web development for students and new employees in Bekk. In the course we say that there are three ways to retrieve data in JavaScript, but we only explain one of the methods. Now, let's see how each of them works: callbacks, promises and async / await.

JavaScript:Do you know addition? Me:Of course! I learned mathematics when I was seven, addition is fairly easy! JavaScript:Do you really know addition? Please solve this equation Me:Eh? JavaScript:Welcome to JavaScript addition!

The JavaScript Advent Calendar is coming to an end. For each day in December, we've written an article on a subject that matters to us. If you want to keep learning about the language and the web itself, here's four exciting web proposals you might want to play with during the holidays!