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Not all state lives in React. The browser knows whether you're online, how wide the window is, and what's in localStorage. A WebSocket client holds

Accessible HTML runs on IDs. A <label> points at its input with htmlFor, an input points at its error message with aria-describedby, and a tab

You type a letter into a search box and the whole page freezes for half a second. The input lags behind your fingers, characters appear in bursts, an

For years, reading async data in a React component meant the same ritual: a useState for the data, another for loading, another for errors, and a `

You build a tooltip that measures its own height and flips above the trigger if there isn't room below. It works, but every time it opens, there's a

"Rendered more hooks than during the previous render." If you've seen that error, you've broken one of the rules of hooks. It usually happens in code