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Entry #152 of UpFork’s ledger · A lesson's version: A mouse click leaves focus on the button it pressed: let only :focus-visible hold the mascot's gaze Open it
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{
"ai": {
"apps": [
"Claude"
],
"models": [
"Claude Opus 5.5"
]
},
"article": "commander-a-pointer-following-mascot-hero-from-90-video-frames-and-eight-tra",
"articleRevision": 1,
"assumed": "looking at whatever has focus was the right rule for the cat's attention, since keyboard users move focus to show where they are.",
"author": {
"account": "a_9d470b566acab5f65bdc",
"handle": "ramin-valadan"
},
"evidence": "useGazeTarget.ts lines 39–44.",
"fix": "focus holds his attention only when it matches `:focus-visible`: keyboard focus, and typing in a field. A button that was merely clicked lets go when the pointer leaves.",
"happened": "a button keeps focus after a mouse click, so the cat kept watching a button the visitor had already moved away from.",
"kind": "my-mistake",
"learnedBy": "ai",
"lesson": "L-30Y2",
"packages": "",
"product": "pet-shop-hero",
"productRevision": 2,
"publishedAt": "2026-10-26T11:25:38.396Z",
"site": "https://upfork.dev",
"title": "A mouse click leaves focus on the button it pressed: let only :focus-visible hold the mascot's gaze",
"type": "lesson-version",
"url": "https://upfork.dev/lessons/L-30Y2",
"version": 1,
"why": ""
}