Search
7 things you should know when getting started with Serverless APIs
14.3.2019
I want you to take a second and think about Twitter, and think about it in terms of scale. Twitter has 326 million users. Collectively, we create ~6,000 tweets every second. Every minute, that’s 360,000 tweets created. That sums up to nearly 200 billion tweets a year. Now, what if the creators...
The Ultimate Guide to JavaScript Algorithms: Implementing a Custom Filter
13.3.2019
In JavaScript, the .filter() function is often used to loop through an array and extract the elements that pass a certain condition specified in a callback function.
Ever wonder
Styling Based on Scroll Position
7.3.2019
Rik Schennink documents a system for being able to write CSS selectors that style a page when it has scrolled to a certain point. If you're like me, you're already on the lookout for document.addEventListener('scroll' ... and being terrified about performance. Rik gets to that right away by both...
A Crypto Derivatives Primer
15.2.2019
Learn about crypto derivatives, risk management and the solutions they offer. From the CMC editorial desk: With increasing interest in crypto derivatives and the function they serve in managing risk, what must you know about them? We asked LXDX, and […]
The post A Crypto Derivatives Primer...
JavaScript Glossary: Array .forEach() Method
8.2.2019
Basics
The forEach() method takes a function that performs an action on each of the elements in this array.
[1, 2, 3, 4, 5].forEach(functio
Using the Little-Known CSS element() Function to Create a Minimap Navigator
5.2.2019
W3C’s CSS Working Group often gives us brilliant CSS features to experiment with. Sometimes we come across something so cool that sticks a grin on our face, but it vanishes right away because we think, “that’s great, but what do I do with it?” The element() function was like that for me. It’s a...
Collective #481
7.1.2019
SVG Gradient Map Filter * Fancy Function Parameters * Algorithms * Tap to Dismiss * WebsiteVoice
Collective #481 was written by Pedro Botelho and published on Codrops
Digital Gold: A Game-Changer for Traditional and Digital Currencies
4.1.2019
Disruption of the global monetary order Trust in currencies is vital for the global economy to function. In the past, when metal money was prevalent, people exchanged gold and silver coins because they were inherently valuable. By contrast, today’s paper […]
The post Digital Gold:...
Ease-y Breezy: A Primer on Easing Functions
18.12.2018
During the past few months, I’ve been actively teaching myself how to draw and animate SVG shapes. I’ve been using CSS transitions, as well as tools like D3.js, react-motion and GSAP, to create my animations.
One thing about animations in general and the documentation these and other animation...
Reversing an Easing Curve
17.12.2018
Let’s take a look at a carousel I worked on where items slide in and out of view with CSS animations. To get each item to slide in and out of view nicely I used a cubic-bezier for the animation-timing-function property, instead of using a standard easing keyword.
See the Pen Carousel with reversed...
JavaScript waitForever
10.12.2018
Writing mochitests for new features in DevTools can be difficult and time-consuming. There are so many elements interacting in an async manner that I oftentimes find myself using the debugger to debug the debugger! In the case where it’s unclear what interaction isn’t working...
Finite State Machines with React
24.7.2018
As JavaScript applications on the web have grown more complex, so too has the complexity of dealing with state in those applications — state being the aggregate of all the data that an application needs to perform its function. Over the last several years, there has been a ton of great...
What does the ‘h’ stand for in Vue’s render method?
30.5.2018
If you’ve been working with Vue for a while, you may have come across this way of rendering your app — this is the default in the latest version of the CLI, in main.js:
new Vue({
render: h => h(App)
}).$mount('#app')
Or, if you’re using a render function, possibly to take advantage...
Responsive tables, revisited
16.5.2018
Lea Verou with some extra super fancy CSS trickery. No way we could miss linking this one up!
One of the problems with responsive table solutions, at least the ones where you are using CSS to rejigger things, is that there is duplicated content somewhere. Either in CSS or HTML.
Lea finds two ways...
CSS Environment Variables
4.5.2018
We were all introduced to the env() function in CSS when all that drama about "The Notch" and the iPhone X was going down. The way that Apple landed on helping us move content away from those "unsafe" areas was to provide us essentially hard-coded variables to use:
padding:
...
Collective #411
30.4.2018
cssgr.id * Ivy * Lifefaker * VS Code Extensions * Unavatar * load-asset * Figurine * Heartbeat Function
Collective #411 was written by Pedro Botelho and published on Codrops
Destructuring and Function Arguments
3.4.2018
The JavaScript language has benefitted from some really awesome new features over the past few years, including arrow functions, the spread operator, and default function argument values. Even if your browser doesn’t yet support proposed JavaScript API syntax additions, you can use a tool...