iFrame

iFrame (derived from “inline frame”) is an element of HTML permitting one HTML document to be nested or embedded inside the main HTML document. Frames are most often used to subdivide web content, whereas the iFrame is often employed to insert variable content, such as an advertisement from another website, into a web page.

iFrames can be scrolled out of view by the surrounding page’s scroll bar, or content within the iFrame can be scrolled by use of its own scroll bar. Frame size is specified in the frame surrounding it. An iFrame can be changed without reloading the surrounding page, using commands in Javascript or the “target” attribute of the HTML anchor. As such, iFrames are common in Ajax applications.