Search
Manipulating Pixels Using Canvas
7.6.2018
Modern browsers support playing video via the <video> element. Most browsers also have access to webcams via the MediaDevices.getUserMedia() API. But even with those two things combined, we can’t really access and manipulate those pixels directly.
Fortunately, browsers have a Canvas...
Debug JavaScript in Production with Source Maps
5.6.2018
These days, the code you use to write your application isn’t usually the same code that’s deployed in production and interpreted by browsers. Perhaps you’re writing your source code in a language t
Combining the Powers of SEM and BIO for Improving CSS
4.6.2018
CSS is easy, some might argue, but that "easiness" can cause messy code. This is especially true through power of preprocessors like Sass or Less where, if you aren’t careful, your CSS can become harder to deal with instead of easier. Sass? Harder? This Gist shows a great example of Sass nesting...
HSL() / HSLa() is great for programmatic color control
1.6.2018
If you ever need to hand-manipulate a color in native CSS, HSL is pretty much the only way. HSL (the hsl() and hsla() functions in CSS) stands for hue, saturation, lightness, and optionally, alpha. We've talked about it before but we can break it down a little more and do some interesting things...
Customize payment solutions with our enhanced platform
31.5.2018
(This is a sponsored post.)
We’ve upped our game by using developers’ feedback to improve the Authorize.Net payment platform. Check out our new, streamlined API, better sample code and SDKs, and use them to provide your merchants with a secure, scalable payment solution. You’ll see that it’s...
Collective #420
31.5.2018
Sculpting Software Animation * Solving Life's Problems with CSS * Critters * Goat * code.xyz * Proppy * Deno * Prerender-loader
Collective #420 was written by Pedro Botelho and published on Codrops
Getting Started with Live Coding in Visual Studio Code w/ Live Share
30.5.2018
Live Share for Visual Studio Code is HOT OFF THE PRESS and publically available as of May 7th 2018! Wha
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...
Lazy Load Animal Memes with Intersection Observer
29.5.2018
Last week we on the code challenge #7 we delved into lazy loading images for increased performance of web pages. Yet to take the challenge? You can do so
Developing a design environment
28.5.2018
Jules Forrest discusses some of the work that her team at Credit Karma has been up to when it comes to design systems. Jules writes:
...in most engineering organizations, you spend your whole first day setting up your development environment so you can actually ship code. It’s generally pretty...
Capture and Report JavaScript Errors with window.onerror
28.5.2018
onerror is a special browser event that fires whenever an uncaught
Build Native Modals Using the Dialog Element
24.5.2018
With release of HTML 5.2 comes the dialog element. The dialog element has been around for a while now but was an experimental technology.
Previously, if we wanted to build a mo
Learning Gutenberg: React 101
23.5.2018
Although Gutenberg is put together with React, the code we’re writing to make custom blocks isn’t. It certainly resembles a React component though, so I think it’s useful to have a little play to get familiar with this sort of approach. There’s been a lot of reading in this series so far, so let’s...
Unicode Patterns
18.5.2018
These Unicode patterns by Yuan Chuan are extraordinarily clever. It's a <css-doodle> custom web component that sets up a CSS grid and randomizes what character to drop into a cell and things, like color.
See all their gorgeous work on CodePen and the very cool <css-doodle> website...
Custom List Number Styling
18.5.2018
How about a classic CSS trick! This isn't even so tricky anymore, since CSS has counter-increment and counter-reset and such that is perfect for this. I just wanted to make sure you knew how it works and had some easy-to-copy examples at the ready.
Let's say all you wanna do is style the dang...
How Error Monitoring Helps You Find Bugs BEFORE Users Do
18.5.2018
One of the biggest distractions to any software team building web and mobile applications is the act of fixing up problems in previously written code.
I'm willing to bet that your personal p
Code Challenge #10: Lazy Loading Animal Memes
18.5.2018
In a bid to lower the load times of a website, several techniques have been developed. One such technique is the lazy loading of images on the page.
TL, DR
Build Nodejs APIs Using Serverless
17.5.2018
Simona Cotin did a great talk at Microsoft Build about Serverless technologies, called "Build Node APIs Using Serverless." In this talk, she addresses pretty much every major gotcha that you might run into while creating Serverless infrastructure for JavaScript applications. Some of the topics...
How React Reconciliation Works
17.5.2018
React is fast! Some of that speed comes from updating only the parts of the DOM that need it. Less for you to worry about and a speed gain to boot. As long as you understand the workings of setState(), you should be good to go. However, it’s also important to familiarize yourself with how this...
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...