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Markets Update: Crypto Bulls Outpace Stocks and Gold

11.5.2019
Cryptocurrency markets have been doing extremely well over the last 48 hours, making a lot of prior skeptics think the bearish crypto winter may have ended. Since our last markets update three days ago, the entire cryptoconomy has gained close to $33 billion in value and trading sessions over...

Get a CSS Custom Property Value with JavaScript

11.4.2019
Here’s a neat trick from Andy Bell where he uses CSS Custom Properties to check if a particular CSS feature is supported by using JavaScript. Basically, he's using the ability CSS has to check for browser support on a particular property, setting a custom property that returns a value of either...

Undefined: The Third Boolean Value

5.4.2019
I wanted to implement a notification message in one of my projects, similar to what you’d see in Google Docs while a document is saving. In other words, a message shows up indicating that the document is saving every time a change is made. Then, once the changes are saved, the message becomes: “All...

JavaScript Glossary: String match()

27.3.2019
Basics This method is a called against a regular expression and returns the matching values in the string. The return value is an array containing the matched values. If no matches are fo

JavaScript Glossary: String startsWith()

27.3.2019
Basics The startsWith method takes a string parameter and checks if the calling string starts with the value provided. It returns a Boolean value, true

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

An Illustrated (and Musical) Guide to Map, Reduce, and Filter Array Methods

26.3.2019
Map, reduce, and filter are three very useful array methods in JavaScript that give developers a ton of power in a short amount of space. Let’s jump right into how you can leverage (and remember how to use!) these super handy methods. Array.map() Array.map() updates each individual value in...

CSS Algorithms

6.3.2019
I wouldn't say the term "CSS algorithm" has widespread usage yet, but I think Lara Schenck might be onto something. She defines it as: a well-defined declaration or set of declarations that produces a specific styling output So a CSS algorithm isn't really a component where there is some parent...

Dealing with overflow and position: sticky;

25.2.2019
Any overflow value other than visible and no height is the enemy of child elements with position: sticky;. It's like that element is ready to stick when the parent scrolls, but it never does because the height is unconstrained. Adding a fixed height can solve the issue, but that's not always...

How @supports Works

18.2.2019
CSS has a neat feature that allows us to test if the browser supports a particular property or property:value combination before applying a block of styles — like how a @media query matches when, say, the width of the browser window is narrower than some specified size and then the CSS within...

The practical value of semantic HTML

7.1.2019
I love how Bruce steps up to the plate here: If the importance of good HTML isn’t well-understood by the newer breed of JavaScript developers, then it’s my job as a DOWF (Dull Old Web Fart) to explain it. Then he points out some very practical situations in which good HTML brings meaningful...

An Initial Implementation of clip-path: path();

24.12.2018
One thing that has long surprised (and saddened) me is that the clip-path property, as awesome as it is, only takes a few values. The circle() and ellipse() functions are nice, but hiding overflows and rounding with border-radius generally helps there already. Perhaps the most useful value...

Fighting FOIT and FOUT Together

19.12.2018
Lots from Divya with the setup: There are 2 kinds of problems that can arise when using webfonts; Flash of invisible text (FOIT) and Flash of Unstyled Text (FOUT) ... If we were to compare them, FOUT is of course the lesser of the two evils If you wanna fight FOIT, the easiest tool is...

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