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Locks: mode property

The mode read-only property of the Lock interface returns the access mode passed to LockManager.request() when the lock was requested. The mode is either "exclusive" (the default) or "shared".

Value

One of "exclusive" or "shared".

Examples

The following examples show how the mode property is passed in the call to LockManager.request(). LockManager is the object returned by navigator.locks.

js

// 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}`);
}

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
mode 69 79 96 No 56 15.4 69 69 96 48 15.4 10.0

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https://developer.mozilla.org/en-US/docs/Web/API/Lock/mode