## callbacks.locked()Returns: Boolean

Description: Determine if the callbacks list has been locked.

- #### version added: 1.7 callbacks.locked()

  - This method does not accept any arguments.

## Example:

Use `callbacks.locked()` to determine the lock-state of a callback list:

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    // A sample logging function to be added to a callbacks listvar foo = function( value ) {  console.log( "foo: " + value );}; var callbacks = $.Callbacks(); // Add the logging function to the callback listcallbacks.add( foo ); // Fire the items on the list, passing an argumentcallbacks.fire( "hello" );// Outputs "foo: hello" // Lock the callbacks listcallbacks.lock(); // Test the lock-state of the listconsole.log ( callbacks.locked() );// true