Create array with all unique combinations

Question

Can\'t figure out how to create an array with all matches. I suppose I need a recursive function for this.

I like to get all values from the JSON below and create an ar

Answer 1

var indices = [];
var lengths = [];
for (i = 0; i= 0; j--) {
        indices[j]++;
        if (indices[j] >= lengths[j] && j != 0) {
            indices[j] = 0;
        } else {
            break;
        }
    }
}