javascript - Knockout move observableArray item down -


from this question, know how move item up:

moveup: function(category) {     var = categories.indexof(category);     if (i >= 1) {         var array = categories();         categories.splice(i-1, 2, array[i], array[i-1]);     } }

what equivalent moving item down?

in solution, delete 2 items, index position, , again insert them (first - next item, , second - moving item): 

movedown = function(number) {     var = self.numbers().indexof(number);     if (i < self.numbers().length - 1) {         var rawnumbers = self.numbers();         self.numbers.splice(i, 2, rawnumbers[i + 1], rawnumbers[i]);     } }

demo


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