Yes, it’s the Twitter heart button. This heart animation was done using an old technique called sprite sheets🡵. On the web sprite sheets are used mainly to reduce the amount of HTTP requests by bundling multiple images together into a single image file. Displaying a sub-image involves clipping the sheet in the appropriate coordinates.
Making content-aware components using CSS :has(), grid, and quantity queries A big thing you need to contend with when working on design systems is anticipating all the different ways someone may use a component. The idea here is that you then preemptively provide sensible behavior and safeguards to keep things working well. An example of this is a “Simple List” component I was helping to make. It
This post is for people who are familiar with JavaScript’s == operator. JavaScript’s “double equals” operator, ==, is typically discouraged. And for good reason: its behavior is tricky. Where === asks “are these the same thing?”, the double-equals operator asks a question that’s not straightforward. More specifically, == implements something called the Abstract Equality Comparison Algorithm, a 13-
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