[](https://travis-ci.org/PolymerElements/iron-ajax) _[Demo and API Docs](https://elements.polymer-project.org/elements/iron-ajax)_ ##<iron-ajax> The `iron-ajax` element exposes network request functionality. With `auto` set to `true`, the element performs a request whenever its `url`, `params` or `body` properties are changed. Automatically generated requests will be debounced in the case that multiple attributes are changed sequentially. Note: The `params` attribute must be double quoted JSON. You can trigger a request explicitly by calling `generateRequest` on the element. ##<iron-request> iron-request can be used to perform XMLHttpRequests. ... this.$.xhr.send({url: url, params: params});