// 숫자 체크
function CheckNum(tocheck)
{
var isnum = true;

if (tocheck == null || tocheck == "")
{
isnum = false;
return isnum;
}

for (var j = 0 ; j < tocheck.length; j++)
{
if (tocheck.substring(j, j + 1) != "0" &&
tocheck.substring(j, j + 1) != "1" &&
tocheck.substring(j, j + 1) != "2" &&
tocheck.substring(j, j + 1) != "3" &&
tocheck.substring(j, j + 1) != "4" &&
tocheck.substring(j, j + 1) != "5" &&
tocheck.substring(j, j + 1) != "6" &&
tocheck.substring(j, j + 1) != "7" &&
tocheck.substring(j, j + 1) != "8" &&
tocheck.substring(j, j + 1) != "9")
{
isnum = false;
}
}
return isnum;
}

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