24
Дек
2012

callbacks.add()

callbacks.add( callbacks )Returns: Callbacks

Description: Add a callback or a collection of callbacks to a callback list.

This method returns the Callbacks object onto which it is attached (this).

Example:

Use callbacks.add() to add new callbacks to a callback list:
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// 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"

Источник: https://api.jquery.com/callbacks.add/

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