Computing with JS's undefined

var n = (undefined == undefined) + (undefined == undefined) + (undefined == undefined) + (undefined == undefined) + (undefined == undefined); var output = (undefined == undefined + undefined) + (undefined == undefined); for (i = (undefined == undefined + undefined) + (undefined == undefined); (i == n + (undefined == undefined)) == (undefined == undefined + undefined); i = i + (undefined == undefined)) { for (j = (undefined == undefined + undefined) + (undefined == undefined + undefined); (j == i) == (undefined == undefined + undefined); j = j + (undefined == undefined)) { mult = mult + output; }