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    This is an experimental technology
    Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.

    The Selection.anchorOffset read-only property returns the number of characters that the selection's anchor is offset within the Selection.anchorNode.

    This number is zero-based. If the selection begins with the first character in the Selection.anchorNode, 0 is returned.


    number =


    Specification Status Comment
    HTML Editing APIs
    The definition of 'Selection.anchorOffset' in that specification.
    Editor's Draft Initial definition
    Selection API
    The definition of 'Selection.anchorOffset' in that specification.
    Working Draft Current

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support ? (Yes) ? ? ?
    Feature Android Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
    Basic support ? (Yes) 1.0 ? ? ?

    See also

    Document Tags and Contributors

    Last updated by: BenjamP,