The Node.contains()
method returns a Boolean
value indicating whether a node is a descendant of a given node, i.e. the node itself, one of its direct children (childNodes
), one of the children's direct children, and so on.
Syntax
node.contains( otherNode )
Example
This function checks to see if an element is in the page's body. As contains
is inclusive and determining if the body contains itself isn't the intention of isInPage
this case explicitly returns false
.
function isInPage(node) { return (node === document.body) ? false : document.body.contains(node); }
Specifications
Specification | Status | Comment |
---|---|---|
DOM The definition of 'Node.contains()' in that specification. |
Living Standard | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
contains | Chrome Full support 16 | Edge Full support 12 | Firefox Full support 9 | IE
Full support
9
| Opera Full support 7 | Safari Full support 1.1 | WebView Android Full support ≤37 | Chrome Android Full support 18 | Firefox Android Full support 9 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 |
Legend
- Full support
- Full support
- See implementation notes.
- See implementation notes.