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What is super() in JavaScript?
6.11.2019
What's happening when you see some JavaScript that calls super()?.In a child class, you use super() to call its parent’s constructor and super.<methodName> to access its parent’s methods. This article will assume at least a little familiarity with the concepts of constructors and child...
Adaptive Photo Layout with Flexbox
3.10.2019
Let’s take a look at a super lightweight way to create a horizontal masonry effect for a set of arbitrarily-sized photos. Throw any set of photos at it, and they will line up edge-to-edge with no gaps anywhere.
The solution is not only lightweight but also quite simple. We’ll be using an unordered...
All the New ES2019 Tips and Tricks
13.8.2019
The ECMAScript standard has been updated yet again with the addition of new features in ES2019. Now officially available in node, Chrome, Firefox, and Safari you can also use Babel to compile these features to a different version of JavaScript if you need to support an older browser.
Let’s look...
then on Objects
5.8.2019
Promises were a revelation in JavaScript development, allowing us to enjoy async processing and avoid callback hell. Many new APIs like Battery API, Cache API, and others use the promise API. One fact you may not know is that you can add a then method to any object to make it Promise-like!...
Optional Chaining
29.7.2019
For all of the improvements that the JavaScript language has added over the past few years, like the spread operator, default argument values, and arrow functions, there are still a few features I’d love to see implemented. On such feature is optional chaining. Optional chaining allows...
JavaScript Proxy with Storage
26.7.2019
The JavaScript Proxy API provides a wealth of “magic” within JavaScript, allowing you to use any object as sort of an alias that allows a wall of validation, formatting, and error throwing. Did you know that you could also employ the Proxy API as an abstraction to different types...
Exploring Sets and Maps in JavaScript
3.7.2019
Let’s take a look into two new constructs that were introduced in the JavaScript ES6 specification:
Set - The Set object allows you to store unique values of any type
ES6 Arrow Functions in JavaScript - Getting Started
25.6.2019
With ES6 JavaScript came many updates to the language including the spread operator, object destructuring, new tpye of variables, and more. On top of all those amazing features came arrow f
Everything You Need to Know About Date in JavaScript
11.6.2019
Date is weird in JavaScript. It gets on our nerves so much that we reach for libraries (like Date-fns and Moment) the moment (ha!) we need to work with date and time.
But we don't always need to use libraries. Date can actually be quite simple if you know what to watch out for. In this article...
Flow Object.values(…)
2.5.2019
JavaScript typing utilities, like Flow and TypeScript, have become popular in JavaScript apps of all sizes. As I mentioned in our Script & Style Show typing podcast, typing is a great way to implicitly implement documentation and validation. Flow isn’t always easy to perfect, however,...
JavaScript Glossary: String lastIndexOf()
27.3.2019
Basics
The lastIndexOf() method returns the last position within a String object which an element can be found. The search starts from the last position of the String object.
JavaScript Glossary: String toLowerCase()
26.3.2019
Basics
The toLowerCase() String method converts a string object to lower case. The return value of the method is the value of the calling string in lower case
JavaScript Glossary: String length
26.3.2019
Basics
The length property of the String object returns the number of code points in a string object. It indicates the length of the string
Exploding 3D Objects with Three.js
26.3.2019
A set of WebGL demos that show an exploding 3D object animation inspired by "Kubrick Life Website: 3D Motion".
Exploding 3D Objects with Three.js was written by Yuriy Artyukh and published on Codrops
JavaScript Glossary: String includes()
19.3.2019
Basics
The includes method checks a provided string against the calling String object, it returns true if the calling String object contains the provided string a
JavaScript Proxy
26.2.2019
I’ve always loved the flexibility of Objects and prototypes in JavaScript, but for a long time, I felt that a level of dynamism was lacking. JavaScript eventually added get and set methods for object properties, which was an awesome step, but there was still room for improvement....
JavaScript Glossary: String concat()
17.2.2019
Basics
This method is used to join the calling string and the provided string arguments. It returns a new String object containing the calling string and the provided arguments . If no arg
Slide an Image to Reveal Text with CSS Animations
29.1.2019
I want to take a closer look at the CSS animation property and walk through an effect that I used on my own portfolio website: making text appear from behind a moving object. Here’s an isolated example if you’d like to see the final product.
Here’s what we're going to work with:
See the...
An Introduction and Guide to the CSS Object Model (CSSOM)
10.12.2018
If you've been writing JavaScript for some time now, it's almost certain you've written some scripts dealing with the Document Object Model (DOM). DOM scripting takes advantage of the fact that a web page opens up a set of APIs (or interfaces) so you can manipulate and otherwise deal with elements...
Object.fromEntries
9.11.2018
The Object object has been buffed with useful methods over the past few years. Object.keys, Object.values, Object.freeze, and Object.assign all address frequently desired functionality. One of the new Object methods is fromEntries, which accepts a Map or map-like array nesting and converts it...