15.2.3.6-4-408.js (705B)
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: 15.2.3.6-4-408 6 description: > 7 ES5 Attributes - Successfully add a property to an object when the 8 object's prototype has a property with same name and [[Writable]] 9 attribute is set to true (Date instance) 10 ---*/ 11 12 Object.defineProperty(Date.prototype, "prop", { 13 value: 1001, 14 writable: true, 15 enumerable: true, 16 configurable: true 17 }); 18 var dateObj = new Date(); 19 dateObj.prop = 1002; 20 21 assert(dateObj.hasOwnProperty("prop"), 'dateObj.hasOwnProperty("prop") !== true'); 22 assert.sameValue(dateObj.prop, 1002, 'dateObj.prop'); 23 24 reportCompare(0, 0);