Understanding Polymer Core Ajax Element

Polymer Library provided Core and Paper Elements inbuilt in the library.As We know Polymer is a kind of Polyfill for Web Components.To help the developers with custom elements these core and paper elements are added .In this Demo, "We will Explore the Core Ajax polymer element".You can get more info and download this core package from the below link:-             http://www.polymer-project.org/docs/elements/core-elements.html
core-ajax  is a non visual e...