Lock：mode 屬性

// Should show "exclusive" (the default)
navigator.locks.request("my_resource", show_lock_properties);

// Should show "exclusive"
navigator.locks.request(
  "my_resource",
  { mode: "exclusive" },
  show_lock_properties,
);

// Should show "shared"
navigator.locks.request(
  "my_resource",
  { mode: "shared" },
  show_lock_properties,
);

function show_lock_properties(lock) {
  console.log(`The lock name is: ${lock.name}`);
  console.log(`The lock mode is: ${lock.mode}`);
}