15.2.3.6-4-370.js (673B)
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: 15.2.3.6-4-370 6 description: > 7 ES5 Attributes - property ([[Writable]] is false, [[Enumerable]] 8 is false, [[Configurable]] is true) is deletable 9 ---*/ 10 11 var obj = {}; 12 13 Object.defineProperty(obj, "prop", { 14 value: 2010, 15 writable: false, 16 enumerable: false, 17 configurable: true 18 }); 19 var beforeDelete = obj.hasOwnProperty("prop"); 20 delete obj.prop; 21 var afterDelete = obj.hasOwnProperty("prop"); 22 23 assert(beforeDelete, 'beforeDelete !== true'); 24 assert.sameValue(afterDelete, false, 'afterDelete'); 25 26 reportCompare(0, 0);