's'

src/pages/book/index.tsx

@@ -16,9 +16,10 @@ function getPb() {
 const LazyChunk = React.memo(({ html, estimatedHeight, forceVisible }) => {
   const [visible, setVisible] = useState(forceVisible);
   const ref = useRef(null);
+  const show = forceVisible || visible;
 
   useEffect(() => {
-    if (forceVisible) { setVisible(true); return; }
+    if (forceVisible) return;
     if (visible) return;
     const el = ref.current;
     if (!el) return;
@@ -35,7 +36,7 @@ const LazyChunk = React.memo(({ html, estimatedHeight, forceVisible }) => {
     return () => observer.disconnect();
   }, [forceVisible, visible]);
 
-  if (visible) {
+  if (show) {
     return <div className="chunk-enter" dangerouslySetInnerHTML={{ __html: html }} />;
   }
   return <div ref={ref} className="chunk-placeholder" style={{ minHeight: estimatedHeight }} />;
@@ -195,18 +196,29 @@ const Book = () => {
     };
   }, [contentLoading]);
 
-  const handleJump = useCallback((text) => {
+  const handleJump = useCallback((index) => {
     setForceShowAll(true);
-    setTimeout(() => {
-      if (!contentRef.current) return;
-      const h1s = contentRef.current.querySelectorAll("h1");
-      for (let h1 of h1s) {
-        if (h1.textContent.trim() === text.trim()) {
-          h1.scrollIntoView({ behavior: "smooth" });
-          break;
+    setshow(false);
+
+    const run = () => {
+      const root = contentRef.current;
+      if (!root) return;
+      const h1s = root.querySelectorAll("h1");
+      const el = h1s[index];
+      if (el) {
+        try {
+          el.scrollIntoView({ behavior: "smooth", block: "start" });
+        } catch (_) {
+          const top = el.getBoundingClientRect().top + (window.pageYOffset || document.documentElement.scrollTop) - 60;
+          window.scrollTo({ top: Math.max(0, top), behavior: "smooth" });
         }
       }
-    }, 200);
+    };
+
+    run();
+    setTimeout(run, 100);
+    setTimeout(run, 300);
+    setTimeout(run, 600);
   }, []);
 
   const submitPayForm = (xorpayUrl, xorpayParams) => {
@@ -284,7 +296,7 @@ const Book = () => {
           show={show}
           mask
           items={activeHeaders}
-          onItemClick={(index) => handleJump(activeHeaders[index])}
+          onItemClick={(index) => handleJump(index)}
           onClose={() => setshow(false)}
         />