(a) Within the time prescribed in the order or such further time as he may fix, the judge of the superior court shall proceed to hear and determine all questions of law and of fact in the case and shall render judgment thereof. Any citizen of this state who is a resident of the governmental body which desires to issue such bonds may become a party to the proceedings at or before the time set for the hearing and any party thereto who is dissatisfied with the judgment of the court confirming and validating the issuance of the bonds or refusing to confirm and validate the issuance of the bonds and the security therefor may appeal from the judgment under the procedure provided by law in cases of injunction. Only a party to the proceedings at the time the judgment appealed from is rendered may appeal from such judgment.

(b) Whenever any governmental body values existing undertakings as permitted by law in connection with the issuance of bonds, the superior courts may review such action, which review shall be had in the proceedings to validate the revenue bonds.