This chapter shall be liberally construed to the end:

(1) That children whose well-being is threatened shall be assisted and protected and restored, if possible, as secure law-abiding members of society;

(2) That each child coming within the jurisdiction of the court shall receive, preferably in his or her own home, the care, guidance, and control that will be conducive to the child's welfare and the best interests of the state; and

(3) That when a child is removed from the control of his or her parents the court shall secure for the child care as nearly as possible equivalent to that which his or her parents should have given the child.