callbacks.add()
Add a callback or a collection of callbacks to a callback list.
.callbacks.add(callbacks)🡢 Callbacks
callbacks
| Function, Array | A function, or array of functions, that are to be added to the callback list. |
This method returns the Callbacks object onto which it is attached (this
).
Use callbacks.add()
to add new callbacks to a callback list:
HTML
// 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"
DEMO