Existing law subjects a person between 12 and 17 years of age, inclusive, who commits a crime, and a person under 12 years of age who commits specified crimes, to the jurisdiction of the juvenile court, which may adjudge that person to be a ward of the court. Under existing law, as added by the Gang Violence and Juvenile Crime Prevention Act of 1998, approved as Proposition 21 at the March 7, 2000, statewide primary election, a minor may be eligible for deferred entry of judgment if certain circumstances apply, including, among others, that the minor has not previously been declared to be a ward of the court for the commission of a felony offense.