# callbacks.fired()

所属分类：回调对象 英文文档：callbacks.fired()

## callbacks.fired()返回: Boolean

描述: 确定回调是否至少已经调用一次。

- #### 添加的版本: 1.7callbacks.fired()

  - 这个方法不接受任何参数

## Example

使用 `callbacks.fired()` 确定回调是否至少已经调用一次：

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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 function "foo" to the listcallbacks.add( foo ); // fire the items on the listcallbacks.fire( "hello" ); // outputs: "foo: hello"callbacks.fire( "world" ); // outputs: "foo: world" // test to establish if the callbacks have been calledconsole.log( callbacks.fired() );