Differences between jquery. fn. extend and jquery. extend

This article briefly describes the concepts and differences between jquery. fn. extend and jquery. extend. It is very practical. If you need it, you can refer to it. 1. jquery. extend (object); add a new method for the class to extend the jQuery class itself.
Jquery. fn. extend (object); add a method to the jQuery object.

$. Extend ({add: function (a, B) {return a + B ;}}); // $. add (3,4); // return 7

Add a "static method" for add in jQuery, and then you can use this method in the place where jQuery is introduced.

2. jQuery. fn. extend (object); the extension to jQuery. prototype is to add "member functions" to the jQuery class ". JQuery class instances can use this "member function ".

$. Fn. extend ({alertClick: function () {$ (this ). click (function () {alert ($ (this ). val () ;};}}); // The page is:// Use $ ("# input1"). alertClick ();

The above is all the content of this article. I hope you will like it.