이 문서는 아직 자원 봉사자들이 한국어로 번역하지 않았습니다. 참여해서 번역을 마치도록 도와 주세요!
English (US)의 문서도 읽어보세요.

Message

TypeError: can't access dead object

Error type

TypeError

What went wrong?

To improve in memory usage and to prevent memory leaks, Firefox disallows add-ons to keep strong references to DOM objects after their parent document has been destroyed. A dead object, is holding a strong (keep alive) reference to a DOM element that persists even after it was destroyed in the DOM. To avoid these issues, references to DOM nodes in foreign document should instead be stored in an object which is specific to that document, and cleaned up when the document is unloaded, or stored as weak references.

Checking if an object is dead

Components.utils offers a isDeadWrapper() method, which privileged code might use.

if (Components.utils.isDeadWrapper(window)) {
  // dead
}

Unprivileged code has no access to Component.utils and might just be able catch the exception.

try {
  String(window);
}
catch (e) {
  console.log("window is likely dead");
}

See also

문서 태그 및 공헌자

 이 페이지의 공헌자: fscholz
 최종 변경: fscholz,