构造org.w3c.dom.NodeHTMLInputElement node new HTMLInputElementImpl(new HTMLDocumentImpl(), input
构造org.w3c.dom.Node
HTMLInputElement node = new HTMLInputElementImpl(new HTMLDocumentImpl(), "input");
??node.setAttribute("type", type);
??node.setAttribute("name", name);
??node.setAttribute("value", value);
注：Node 是 HTMLInputElement 的祖先类