## jQuery.contains( container, contained )Returns: Boolean

Description: Check to see if a DOM element is a descendant of another DOM element.

- #### version added: 1.4 jQuery.contains( container, contained )

  - container
    Type: Element
    The DOM element that may contain the other element.
  - contained
    Type: Element
    The DOM element that may be contained by (a descendant of) the other element.

The `$.contains()` method returns `true` if the DOM element provided by the second argument is a descendant of the DOM element provided by the first argument, whether it is a direct child or nested more deeply. Otherwise, it returns `false`. Only element nodes are supported; if the second argument is a text or comment node, `$.contains()` will return `false`.

Note: The first argument must be a DOM element, not a jQuery object or plain JavaScript object.

## Example:

Check if an element is a descendant of another.

1 2 |
    $.contains( document.documentElement, document.body ); // true$.contains( document.body, document.documentElement ); // false