var o = {}; var arr = [o,o,o,o,o,o,o,o,o,o,o,o,o]; var out = []; const OUTER = 10; for (var i = 0; i < 10; ++i) { for (var j = 0; j < arr.length; ++j) { out.push(String.prototype.indexOf.call(arr[i], 'object')); } } assertEq(out.length, 10 * arr.length); for (var i = 0; i < out.length; ++i) assertEq(out[i], 1);