descendantOf :: Element

descendantOf(element, ancestor) -> Boolean Checks if element is a descendant of ancestor.

As descendantOf() internally applies $() to ancestor, it accepts indifferently an element or an element’s id as its second argument.

Examples

<div id="australopithecus">

<div id="homo-herectus">

<div id="homo-sapiens"></div>

</div>

</div>

$('homo-sapiens').descendantOf('australopithecus');

// -> true

$('homo-herectus').descendantOf('homo-sapiens');

// -> false

Prototype API 1.5.0 - prototypejs.org