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    TreeWalker.firstChild()

    The TreeWalker.firstChild() method moves the current Node to the first visible child of the current node, and returns the found child. It also moves the current node to this child. If no such child exists, returns null and the current node is not changed.

    Syntax

    node = treeWalker.firstChild;

    Example

    var treeWalker = document.createTreeWalker(
        document.body,
        NodeFilter.SHOW_ELEMENT,
        { acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; } },
        false
    );
    var node = treeWalker.firstChild(); // returns the first child of the root element, or null if none
    
    

    Specifications

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

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support 1.0 2.0 (1.8.1) 9.0 9.0 3.0
    Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support (Yes) 1.0 (1.8.1) (Yes) 9.0 3.0

    See also

    Document Tags and Contributors

    Contributors to this page: teoli, Prachi_Dighe, kollishivagangadhar
    Last updated by: teoli,