docs: public static String removeAllHtmlAttr(String content, String... tagNames) {
  		String regex = null;
  		for (String tagName : tagNames) {
  			regex = StrUtil.format("(?i)<{}[^>]*?>", tagName);
  			content = content.replaceAll(regex, StrUtil.format("<{}>", tagName));
  		}
  		return content;
  	}