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Nalezeno "Functions": 133

Intro to React Hooks


Hooks make it possible to organize logic in components, making them tiny and reusable without writing a class. In a sense, they’re React’s way of leaning into functions because, before them, we’d have to write them in a component and, while components have proven to be powerful and functional...

Converting Color Spaces in JavaScript


A challenge I faced in building an image "emojifier" was that I needed to change the color spaces of values obtained using getImageData() from RGB to HSL. I used arrays of emojis arranged by brightness and saturation, and they were HSL-based for the best matches of average pixel colors with...

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


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...

Ease-y Breezy: A Primer on Easing Functions


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...

Get Viewport Lines and Columns in CodeMirror


CodeMirror is an amazing utility for presenting code in a browser environment.  Syntax highlighting, widgets, and a number of advanced functions make it a unique, useful tool.  When using CodeMirror inside the Firefox DevTools debugger, I found that adding hundreds of column breakpoint widgets...

HSL() / HSLa() is great for programmatic color control


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...

Forms, Auth and Serverless Functions on Gatsby and Netlify


Abstracting infrastructure is in our DNA. Roads, schools, water supply networks—you get the idea. Web development is no exception: serverless architectures are a beautiful expression of that phenomenon. Static sites, in particular, are turning into dynamic, rich experiences. Handling static...

Destructuring and Function Arguments


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...

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