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32 lines
1.4 KiB
HTML
32 lines
1.4 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<title>13 focus order</title>
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<link rel="stylesheet" href="../_style.css">
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<script src="../_lib.js"></script>
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<body>
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<main>
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<p>Goal: focus the input by <em>clicking</em> it (not <code>.focus()</code>), then type <code>x</code>.
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Pointerdown must precede focus, and <code>:focus-visible</code> must be false for pointer focus.</p>
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<input id="t" placeholder="click then type x" style="font-size:18px;padding:8px 12px;width:240px">
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</main>
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<script>
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Challenge.init({ id: "focus-order", instructions: "click input then type 'x'" });
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const t = document.getElementById("t");
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let lastPointer = -Infinity, lastFocus = -Infinity, sawPointer = false;
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t.addEventListener("pointerdown", (e) => { lastPointer = e.timeStamp; sawPointer = true; });
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t.addEventListener("focus", (e) => {
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lastFocus = e.timeStamp;
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if (!sawPointer) Challenge.fail("focus arrived with no preceding pointerdown");
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else if (lastFocus < lastPointer) Challenge.fail("focus before pointerdown");
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});
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t.addEventListener("input", () => {
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if (t.value !== "x") return;
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// For pointer-driven focus, :focus-visible should be false.
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const fv = t.matches(":focus-visible");
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Challenge.log("focus-visible", { fv });
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if (fv) Challenge.fail(":focus-visible true after pointer click (looks like keyboard focus)");
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else if (window.__verdict !== "FAIL") Challenge.pass("pointerdown→focus→input order ok, :focus-visible=false");
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});
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</script>
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</body>
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