For the purposes of subsection (b)(10) of this section, “child” means an unmarried individual under the age of 21 years. An equity court has jurisdiction over: adoption of a child, except for a child who is under the jurisdiction of any juvenile court and who previously has been adjudicated to be a child in need of assistance; alimony; annulment of a marriage; divorce; custody or guardianship of a child except for a child who is under the jurisdiction of any juvenile court and who previously has been adjudicated to be a child in need of assistance; visitation of a child; legitimation of a child; paternity; support of a child; custody or guardianship of an immigrant child pursuant to a motion for Special Immigrant Juvenile factual findings requesting a determination that the child was abused, neglected, or abandoned before the age of 18 years for purposes of § 101(a)(27)(J) of the federal Immigration and Nationality Act; and a petition for authorization for a minor to marry. In exercising its jurisdiction over the custody, guardianship, visitation, or support of a child, an equity court may: direct who shall have the custody or guardianship of a child, pendente lite or permanently; determine who shall have visitation rights to a child; decide who shall be charged with the support of the child, pendente lite or permanently; from time to time, set aside or modify its decree or order concerning the child; or issue an injunction to protect a party to the action from physical harm or harassment. This section does not take away or impair the jurisdiction of a juvenile court or a criminal court with respect to the custody, guardianship, visitation, and support of a child.