callbacks.fired()
Determine if the callbacks have already been called at least once.
.callbacks.fired()🡢 Boolean
Use callbacks.fired() to determine if the callbacks in a list have been called at least once:
HTML
// A sample logging function to be added to a callbacks list
var foo = function (value) {
console.log("foo:" + 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"
callbacks.fire("world"); // Outputs: "foo: world"
// Test to establish if the callbacks have been called
console.log(callbacks.fired());
DEMO