How can I sort an indirect array with javascript?

Question

In my project, I need to sort an array that contain index of an other array (it\'s item). I\'ve search for many hours, but I did not find anyone with my problem.

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Answer 1

Much Code, but it works :)

For sort ASC:

var test = [1, 4, 3, 4, 5, 6, 7, 8, 9];
console.log("Original Array: " + test);
var len = test.length;
var indices = new Array(len);
for (var i = 0; i < len; ++i) indices[i] = i;
indices.sort(function (a, b) { return test[a] < test[b] ? -1 : test[a] > test[b] ? 1 : 0; });
test.sort();
console.log("Sort-ASC " + test);
console.log("Index from Array " + indices);

For sort DESC:

var test = [1, 4, 3, 4, 5, 6, 7, 8, 9];
console.log("Originales Array: " + test)
var len = test.length;
var indices = new Array(len);
for (var i = 0; i < len; ++i) indices[i] = i;
indices.sort(function (a, b) { return test[a] < test[b] ? -1 : test[a] > test[b] ? 1 : 0; });
indices.reverse();
test.sort();
test.reverse();
console.log("Sort-DESC " + test);
console.log("Index from Array " + indices);