J.W.

I.A. (minor) was detained at birth by Alameda County Social Services Agency (agency) after she tested positive for cocaine. As a basis for jurisdiction, the agency alleged LA.’s mother (Mother) abused drugs, preventing her from caring properly for the minor, and Mother and the minor’s alleged father, appellant J.W. (Father), had engaged in domestic violence and had criminal histories. The juvenile court sustained all of the jurisdictional allegations and detained the minor. Father contends the jurisdictional findings involving his conduct should be vacated because they were not supported by substantial evidence, but he does not challenge the validity of the jurisdictional finding based on Mother’s drug abuse. Because Father’s contentions, even if accepted, would not justify a reversal of the court’s *1488 jurisdictional ruling or the grant of any other effective relief, we decline to address them and dismiss the appeal.

I. BACKGROUND

The minor was the subject of a dependency petition under Welfare and Institutions Code 1 section 300, subdivisions (b) and (g), filed November 15, 2010. 2 Under subdivision (b), the petition alleged the minor tested positive for cocaine at…