// Copyright (c) 2012 Ecma International. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es5id: 15.2.3.14-6-2 description: > Object.keys - the order of elements in returned array is the same with the order of properties in 'O' (sparse array) includes: [runTestCase.js] ---*/ function testcase() { var sparseArray = [1, 2, , 4, , 6]; var tempArray = []; for (var p in sparseArray) { if (sparseArray.hasOwnProperty(p)) { tempArray.push(p); } } var returnedArray = Object.keys(sparseArray); for (var index in returnedArray) { if (tempArray[index] !== returnedArray[index]) { return false; } } return true; } runTestCase(testcase);