示例

描述:

使用 callbacks.add() 添加新的回调到回调列表：

jQuery 代码:

// a sample logging function to be added to a callbacks list

var foo = function( value ){

    console.log( 'foo:' + value );

}



// another function to also be added to the list

var bar = function( value ){

    console.log( 'bar:' + value );

}



var callbacks = $.Callbacks();



// add the function 'foo' to the list

callbacks.add( foo );



// fire the items on the list

callbacks.fire( 'hello' );  

// outputs: 'foo: hello'



// add the function 'bar' to the list

callbacks.add( bar );



// fire the items on the list again

callbacks.fire( 'world' );  



// outputs:

// 'foo: world'

// 'bar: world'