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    The Range.commonAncestorContainer read-only property returns the deepest, or further down the document tree, Node that contains both the Range.startContainer and Range.endContainer nodes.

    Since a Range need not be continuous, and may also partially select nodes, this is a convenient way to find a Node which encloses a Range.

    This property is read-only. To change the ancestor container of a Node, consider using the various methods to set the start and end positions of the Range.


    rangeAncestor = range.commonAncestorContainer;


    var range = document.createRange();
    rangeAncestor = range.commonAncestorContainer;


    Specification Status Comment
    The definition of 'Range.commonAncestorContainer' in that specification.
    Living Standard No change.
    Document Object Model (DOM) Level 2 Traversal and Range Specification
    The definition of 'Range.commonAncestorContainer' in that specification.
    Recommendation Initial specification.

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support (Yes) 1.0 (1.7 or earlier) 9.0 9.0 (Yes)
    Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support (Yes) 1.0 (1.0) 9.0 9.0 (Yes)

    See also

    Document Tags and Contributors

    Contributors to this page: Sheppy, fscholz, shubham.hatwar, DR, jsx, ethertank, Jonnyq, teoli, Ms2ger
    Last updated by: fscholz,