15.2.3.7-6-a-188.js (808B)
1 // Copyright (c) 2012 Ecma International. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 es5id: 15.2.3.7-6-a-188 6 description: > 7 Object.defineProperties - 'O' is an Array, 'P' is an array index 8 named property, 'P' is own data property that overrides an 9 inherited data property (15.4.5.1 step 4.c) 10 ---*/ 11 12 var arr = []; 13 14 assert.throws(TypeError, function() { 15 Object.defineProperty(Array.prototype, "0", { 16 value: 11, 17 configurable: true 18 }); 19 20 Object.defineProperty(arr, "0", { 21 value: 12, 22 configurable: false 23 }); 24 25 Object.defineProperties(arr, { 26 "0": { 27 configurable: true 28 } 29 }); 30 }); 31 assert.sameValue(arr[0], 12, 'arr[0]'); 32 assert.sameValue(Array.prototype[0], 11, 'Array.prototype[0]'); 33 34 reportCompare(0, 0);