Preheat the oven to 350 degrees F.

Sift together the flour, baking soda and salt in a medium bowl. Mix together the vanilla, eggs and orange juice in a measuring cup or small bowl. Cream the sugar and butter in a medium bowl until pale yellow and fluffy, about 5 minutes. Add in the egg mixture and beat until creamy. Mix in the bananas until smooth. Pour the flour in 2 batches into the batter and mix on low speed until incorporated. Stir in the chocolate chips with a wooden spoon. Pour into a greased loaf pan and bake 1 hour, covering lightly with foil if the top gets too brown. Cool, remove from the pan and slice. Serve dusted with the confectioners' sugar