function getNumbersList(elements, count) {
var a;
var numbersList = [];
--count;
for (a = 0; a < elements.length; a++) {
if (count == 0) {
numbersList.push(elements[a]);
} else {
var dupplicatedElements = elements.slice();
var first = dupplicatedElements.splice(a, 1);
var recursiveList = getNumbersList(dupplicatedElements, count);
for (b = 0; b < recursiveList.length; b++) {
numbersList.push(first.toString() + recursiveList[b].toString());
}
}
}
return numbersList;
}
var elements = [1, 2, 3, 4, 5, 6, 7, 8, 9];
var numbersList = getNumbersList(elements, 9);
var answerList = [];
for (i = 0; i < numbersList.length; i++) {
var numbers = numbersList[i];
abc = parseInt(numbers.substring(0, 3));
de = parseInt(numbers.substring(3, 5));
fghi = parseInt(numbers.substring(5, 9));
if (abc * de == fghi) {
answerList.push(numbers);
}
}
for (i = 0; i < answerList.length; i++) {
document.querySelector("#test_result").innerHTML += answerList[i] + "
";
}