Source/WebCore/dom/ParentNode.idl

/*
 * Copyright (C) 2015 Apple Inc. All Rights Reserved.
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 * Redistribution and use in source and binary forms, with or without
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// https://dom.spec.whatwg.org/#interface-parentnode
interface mixin ParentNode {
    [SameObject] readonly attribute HTMLCollection children;
    readonly attribute Element? firstElementChild;
    readonly attribute Element? lastElementChild;
    readonly attribute unsigned long childElementCount;

    [CEReactions, Unscopable] undefined prepend((Node or DOMString)... nodes);
    [CEReactions, Unscopable] undefined append((Node or DOMString)... nodes);
    [CEReactions, Unscopable] undefined replaceChildren((Node or DOMString)... nodes);

    Element? querySelector(DOMString selectors);
    [NewObject] NodeList querySelectorAll(DOMString selectors);
};