These core object constructors are available to all apps without requiring any libraries. Objects relating to UI elements are documented in UI Classes (Widgets).
| Name | Description |
|---|---|
| NetRequest | Makes HTTP and similar requests from JavaScript. This object is similar to the standard browser XMLHttpRequest object. |
| DOMParser | Similar to the standard DOMParser. Used to parse an XML string into a DOM document that can be traversed and manipulated in the usual ways (getElementById(), appendChild(), etc). |
| XMLSerializer | Similar to standard XMLSerializer. Used to convert a DOM document into a valid XML string. |