| // Copyright (C) 2020 Alexey Shvayka. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-enumerate-object-properties |
| description: > |
| Property names are returned in ascending chronological order of creation |
| that is unaffected by [[DefineOwnProperty]]. |
| info: | |
| EnumerateObjectProperties ( O ) |
| |
| EnumerateObjectProperties must obtain the own property keys of the target object |
| by calling its [[OwnPropertyKeys]] internal method. Property attributes of the |
| target object must be obtained by calling its [[GetOwnProperty]] internal method. |
| |
| OrdinaryOwnPropertyKeys ( O ) |
| |
| [...] |
| 3. For each own property key P of O that is a String but is not an array index, |
| in ascending chronological order of property creation, do |
| a. Add P as the last element of keys. |
| [...] |
| 5. Return keys. |
| includes: [compareArray.js] |
| ---*/ |
| |
| var obj = {}; |
| obj.a = 1; |
| obj.b = 2; |
| Object.defineProperty(obj, "a", {value: 11}); |
| var objKeys = []; |
| for (var objKey in obj) { |
| objKeys.push(objKey); |
| } |
| assert.compareArray(objKeys, ["a", "b"]); |
| |
| var arr = []; |
| Object.defineProperty(arr, "a", { |
| get: function() {}, |
| enumerable: true, |
| configurable: true, |
| }) |
| arr.b = 2; |
| Object.defineProperty(arr, "a", { |
| get: function() {}, |
| }); |
| var arrKeys = []; |
| for (var arrKey in arr) { |
| arrKeys.push(arrKey); |
| } |
| assert.compareArray(arrKeys, ["a", "b"]); |