Пример #1
inline bool matchesTagName(const QualifiedName& tagName, const Element& element)
    if (tagName == anyQName())
        return true;
    if (element.hasLocalName(tagName.localName()))
        return true;
    // Non-html elements in html documents are normalized to their camel-cased
    // version during parsing if applicable. Yet, type selectors are lower-cased
    // for selectors in html documents. Compare the upper case converted names
    // instead to allow matching SVG elements like foreignObject.
    if (!element.isHTMLElement() && element.document().isHTMLDocument())
        return element.tagQName().localNameUpper() == tagName.localNameUpper();
    return false;