Store arbitrary data associated with the matched elements or return the value at the named data store for the first element in the set of matched elements.


Provides a way to execute callback functions based on zero or more Thenable objects, usually Deferred objects that represent asynchronous events.


A generic iterator function, which can be used to seamlessly iterate over both objects and arrays. Arrays and array-like objects with a length property (such as a function’s arguments object) are iterated by numeric index, from 0 to length-1. Other objects are iterated via their named properties.