表示节点类型的 HTML nodeType 值

/**
 * HTML nodeType values that represent the type of the node
 */

export const ELEMENT_NODE = 1;
export const TEXT_NODE = 3;
export const COMMENT_NODE = 8;
export const DOCUMENT_NODE = 9;
export const DOCUMENT_TYPE_NODE = 10;
export const DOCUMENT_FRAGMENT_NODE = 11;