feat(chrome): hand snapshots to context mode

2026-08-28 08:35:57 +00:00 · 2026-08-28 14:45:37 +08:00
parent 221e978622
commit f3a2abe1e4
96 changed files with 12800 additions and 26 deletions
@@ -0,0 +1,28 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>14 wheel scroll</title>
+<link rel="stylesheet" href="../_style.css">
+<script src="../_lib.js"></script>
+<body>
+<main>
+  <p>Goal: scroll the box to the bottom. Page rejects raw <code>scrollTop</code> assignment without
+     <code>wheel</code> events.</p>
+  <div id="box" style="height:200px;overflow:auto;border:1px solid #555;background:#fff;color:#111;padding:8px">
+    <div style="height:1200px">scroll me ⬇<br><br>...lots of content...</div>
+  </div>
+</main>
+<script>
+Challenge.init({ id: "wheel-scroll", instructions: "scroll the box to its bottom" });
+const box = document.getElementById("box");
+let wheelCount = 0, lastWheelTs = -Infinity;
+box.addEventListener("wheel", (e) => { wheelCount++; lastWheelTs = e.timeStamp; Challenge.log("wheel", { dy: e.deltaY }); }, { passive: true });
+box.addEventListener("scroll", () => {
+  Challenge.log("scroll", { top: box.scrollTop });
+  if (box.scrollTop + box.clientHeight >= box.scrollHeight - 2) {
+    if (wheelCount === 0) Challenge.fail("scrolled to bottom with zero wheel events");
+    else if (performance.now() - lastWheelTs > 1500) Challenge.fail("wheel events too far before final scroll");
+    else Challenge.pass(`${wheelCount} wheel events accompanied scroll`);
+  }
+});
+</script>
+</body>