Description

The callbacks.add() method adds a callback or a collection of callbacks to a callback list.

---

This method has the form:

callbacks.add(callbacks)

Parameter	Description
callbacks	Specifies a function, or array of functions, that are to be added to the callback list

Return Value

This form return is undefined.

Examples

Use the callbacks.add() method to add new callbacks to a callback list:

// 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');

// output is: 'foo: hello'


// add the function 'bar' to the list
callbacks.add(bar);

// fire the items on the list again
callbacks.fire('world');

// output is:
// 'foo: world'
// 'bar: world'