josh comeau animation

There's another benefit to hardware acceleration: we can take advantage of sub-pixel rendering. You may have noticed a similar effect on some of the demos on this page! In this post, we'll learn exactly how styled-components works by building our own mini-version. As front-end developers, we often learn CSS by focusing on individual properties. It's simpler, right? Honestly, this feels right to me. An Interactive Guide to Keyframe Animations CSS keyframe animations are incredibly flexible and powerful, but they're also a bit weird. Note that ease-in is pretty much exclusively useful for animations that end with the element offscreen or invisible; otherwise, the sudden stop can be jarring. In the case of our equilibrium curve, it's essentially a more-aggressive ease-out: When we press down on the button, we switch to our :active transition. We can animate multiple properties in the same animation declaration. Browsers have their own inscrutable logic around this stuff, and I'd rather not leave it up to chance. This affects all 3 layers. In this tutorial, we'll build an animated 3D button with HTML and CSS that sparks joy. An Interactive Guide to CSS Transitions. This is known as hardware acceleration. Use simple controls to draw multiple box shadows that emulate the way light naturally diffuses from the casting object. CSS animations are meant to be generic and reusable, but this animation will always cause an element to bounce by 20px. Interactivity No more handing-off between CPU and GPU, no more telltale snapping into place. This happens because of a hand-off between the computer's CPU and GPU. In this tutorial, I'll show you how. The Responsive Web Design Certification is a 300 hours program that . In this tutorial, we'll dig deep and understand what they do, why they're useful, and how to get the most out of them. While we could have used margin-top for this, transform: translate is a better tool for the job. Experience this for yourself by tweaking the new "Frames per second" control: In practice, poor performance will often take the form of variable framerates, so this isn't a perfect simulation. 2020-present Joshua Comeau. Here we've said that the animation should last 1 second (1000ms). In other browsers, the Tab key alone is sufficient. I have a theory about this: unlike with JS, so much of CSS is implicit and behind-the-scenes. This is the best way to accomplish this effect, since transforms can be hardware-accelerated. It turns out that specificity isn't really the right way to think about this; instead, we need to think about cascade origins. In the early days, though, will-change had some problems. In Chrome on MacOS, this equates to a solid blue line. CSS , UI , Tools , Frameworks. Here's the CSS, with some stuff removed for brevity: In order to stack HTML elements, we use absolute positioning. I've done some testing, and have found that I get the best results across modern browsers with will-change. If we can learn to quickly pick up new languages/frameworks/tools, we'll become so much more effective at our job. We want our element to fade out. By default, changes in CSS happen instantaneously. The color varies between iOS and Android, but the effect is constant. They can offer feedback, and communicate in a more-visceral way than copy alone. Here's a piece of good news, as well: the order doesn't matter. As I was building the last couple demos, I realized just how much CSS has evolved in the past few years! This is a quick step we can perform to make our sites/apps friendlier and safer. There's also backface-visibility: hidden. When the animation ends, animation-fill-mode: forwards will copy/paste the declarations in the final block, persisting them forwards in time. How do we solve for this? The name of the property we wish to animate. Fortunately, we can use a swanky CSS pseudo-class to help us out: :focus-visible. We want to move the element up, so we have to use a negative value. When all is specified, any CSS property that changes will be transitioned. Think of it like props to a React component! In this episode, Josh Comeau chats about how he grew a community and reputation around CSS, and how the lessons he learned can apply to . Lots of devs find them confusing, for a whole host of reasons. In React, we don't update the DOM directly, we tell React what we want the DOM to look like, and React tackles the rest. by Josh Comeau. I add the will-change: transform declaration so that this animation can be hardware-accelerated. This year, I'm focusing big-time on writing content for front-end developers. I've also given it a custom easing curve, via cubic-bezier. The default value is normal, going from 0% to 100% over the course of the specified duration. Even with a 0px value, the browser still hands it off to the GPU, since moving in 3D space is definitely a GPU strength. The CodeSandbox team recently released a wonderful tool called Sandpack, to help us create these live-updating code editors. The default value is normal, going from 0% to 100% over the course of the specified duration. Josh is a senior software developer from Montreal. For this reason, I prefer to exclude delay from the shorthand: Probably the most confusing aspect of keyframe animations is fill modes. I just closed down preorders, and I'm thrilled to report that the course has made over half a million dollars: . The most fundamental and critical piece, though, is the humble CSS transition. A deep dive into Bzier curves in React. This works, but there's a more-elegant way to accomplish the same effect. Buttons (and the forms they submit) make the web dynamic and interactive and powerful. Frustratingly, the animation-delay period doesn't count. This span houses all of the cosmetic styles (background color, font stuff, etc). Sequence and animate elements using the built-in easing curves library, or finesse the details with the custom curve editor. There will be no spam and you can unsubscribe at any time. I'll let you know when I publish new content, and I'll even share exclusive newsletter-only content now and then.No spam, unsubscribe at any time. This week, we are joined by indie hacker and course creator Josh Comeau. 2021 - 2022 . Properties like margin-top can't sub-pixel-render, which means they need to round to the nearest pixel, creating a stepped, janky effect. The animation itself works fine, but when it's over, the element pops back into existence: If we were to graph the element's opacity over time, it would look something like this: Why does the element jump back to full visibility? When I look around the web, most of the shadows I see are fuzzy grey boxes. This tutorial is written for JavaScript developers trying to become more comfortable with CSS. By delegating an element's rendering to the GPU, it'll consume more video memory, a resource that can be limited, especially on lower-end mobile devices. an element fading in and out, over and over). The interesting part, though, is that we can set it to alternate, which ping-pongs between normal and reverse on subsequent iterations. The details When tapping an interactive element on mobile devices, the browser will flash a "tap rectangle" on top: Notice the grey rectangle that flashes quickly? It takes 4 numbers, representing 2 control points. Should I use pixels or rems?. My goal with this blog is to create helpful content for front-end web devs, and my newsletter is no different! And since that property has a different value in each box, they each bounce to different amounts. Find Josh Elsewhere: Let's take another look at our rising Hello World button. An in-depth look at the technical stack behind this very blog! Is there a clearer way we could accomplish the same effect? Well, we've come pretty far in our quest to become proficient with CSS transitions, but there are a couple final details to go over. Frames will get dropped, as the device can't keep up. CSS keyframe animations are incredibly flexible and powerful, but theyre also a bit weird. In this blog post, I'll share how it works, what the tradeoffs are, and how I mitigate them. I have a confession to make: the demonstrations above, showing the different timing functions, were exaggerated. He opened pre-orders for a week to validate the course and ended up selling $550k. There's a surprising amount of depth to them; even in this long-winded blog post, I've had to cut some stuff out to keep it manageable! Just don't broadly apply will-change to elements that won't move. Patreon is empowering a new generation of creators. For hover animations, I like to make the enter animation quick and snappy, while the exit animation can be a bit more relaxed and lethargic: Another common example is modals. The last little detail is an additional hover effect: On hover, the button brightens. I've written before about respecting prefers-reduced-motion, an OS-level setting users can toggle to express a preference for less motion. In this tutorial, I'll show you how I use it on this blog. In the past, I'd use a typical CSS reset, but times have changed, and I believe I have a better set of global styles! If you're a human, please ignore this field. But our button offers plenty of feedback as-is, so we don't need it in this case. The button, however, is stationary. This deep-dive tutorial examines how React and Gatsby can be used to pre-render content, and how we can work around the constraints to build dynamic, personalized web apps. If you want to learn a modern JavaScript framework like React or Angular, you better be familiar with the terminal! We can use transition-delay! If I had a bone to pick with the CSS language authors when it comes to transitions, it's that ease is poorly named. Josh W Comeau202094 8:44 In this tutorial, we're diving deep into CSS keyframes. I'll let you know when I publish new content, and I'll even share exclusive newsletter-only content now and then.No spam, unsubscribe at any time. In my experience, this is an unrealistic expectation, and things dont quite work out that way. education, film, animation, makeup design, visual effects, writing, game design, sound design, entertainment business management, programming, acting, digital design, graphic design, VR, English for Creative Arts, Visual Art, 3D Animation, Classic . Here's what that looks like. ease-in, naturally, is useful for the opposite: moving something beyond the bounds of the viewport. I don't think so. One of them is hardware-accelerated, and the other one isn't. In this comprehensive blog post, we'll answer this question once and for all. In this tutorial, we'll dig in and learn a bit more about CSS transitions, and how we can use them to create lush, polished animations. No developer blog or technical documentation site is complete without an interactive code playground. Some timing functions may feel faster or slower, but in these examples, they all take exactly 1 second to complete. To really sell the whole 3D thing, we can add a shadow: You may be tempted to reach for box-shadow to accomplish this, but we'll have much more success by repeating a trick we saw earlier. Those properties are super expensive to animate. For example, forwards leave the element at the end of the animation instead of returning it to the beginning which is the default behaviour. Additionally, in Safari, buttons can be focused via Option + Tab. Like all of the animation properties we're discussing, it can be tossed into the animation shorthand salad: Keyframe animations are cool enough on their own, but when we mix them with CSS variables (AKA CSS custom properties), things get next-level . I am pursuing a Bachelor of Business Administration in Finance, and am seeking a 2023 full-time job in the . Try scrubbing with the timeline; notice how drastic the movement is in the first few frames, and how subtle it becomes towards the end. If we want a buttery-smooth transition on the button, we'll have way more success with this strategy. If the provided built-in options don't suit your needs, you can define your own custom easing curve, using the cubic bzier timing function! In this case, I feel pretty confident that we are improving the experience, not degrading it, but these properties should be used extremely rarely. This happens immediately, as soon as the property is set. 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