callbacks.locked()

分类：回调对象

callbacks.locked()返回: Boolean

描述: 判断回调列表是否已被锁定。

示例

使用 callbacks.locked() 来判断回调列表的锁定状态。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
// A sample logging function to be added to a callbacks list
var foo = function( value ) {
  console.log( "foo: " + value );
};
 
var callbacks = $.Callbacks();
 
// Add the logging function to the callback list
callbacks.add( foo );
 
// Fire the items on the list, passing an argument
callbacks.fire( "hello" );
// Outputs "foo: hello"
 
// Lock the callbacks list
callbacks.lock();
 
// Test the lock-state of the list
console.log ( callbacks.locked() );
// true