html_tag.go
func extractTagName(s string) string {
	tagName := strings.Split(strings.Split(s, sharp)[0], dot)[0]

	if tagName == "" {
		tagName = tagNameDiv
	}

	return tagName
}
func extractTagName(s string) string {
	tagName := strings.Split(strings.Split(s, sharp)[0], dot)[0]

	if tagName == "" {
		tagName = tagNameDiv
	}

	return tagName
}
// extractTag extracts and returns a tag.