js find place value

1        var ones = Math.floor(num % 10),
2            tens = Math.floor(num/10 % 10),
3            hundreds = Math.floor(num/100 % 10),
4            thousands = Math.floor(num/1000 % 10),
5            tenThousands = Math.floor(num / 10000 % 10),
6            hundredThousands = Math.floor(num / 100000 % 10),
7            millions = Math.floor(num / 1000000 % 10),
8            tenMillions = Math.floor(num / 10000000 % 10),
9            hundredMillions = Math.floor(num / 100000000 % 10);