Chapter 9: 7 Performance Tips for Jank-free JavaScript Animations
by Maria Antonietta Perna
The role of web animation has evolved from mere decorative fluff to serving concrete purposes in the context of user experience — such as providing visual feedback as users interact with your app, directing users' attention to fulfill your app's goals, offering visual cues that help users make sense of your app's interface, and so on.
To ensure web animation is up to such crucial tasks, it's important that motion takes place at the right time in a fluid and smooth fashion, so that users perceive it as aiding them, rather than as getting in the way of whatever action they're trying to pursue on your app.
One dreaded effect of ill-conceived animation is ...
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