// Copyright 2014 Samsung Electronics Co., Ltd. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. var emptyObject = {} var propertyDescriptor = { enumerable: true, configurable: true, value: "hello!", writable: true } Object.defineProperty(emptyObject, 'myProperty', propertyDescriptor); var newPropertyDescriptor = { enumerable: false, configurable: false, writable: false } Object.defineProperty(emptyObject, 'myProperty', newPropertyDescriptor); //change properties of property var isWritable = false; var isEnumerable = false; var isConfigurable = false; emptyObject.myProperty = "foobar"; if (emptyObject.myProperty == "foobar") isWritable = true; for (p in emptyObject) { if (emptyObject[p] == "foobar") { isEnumerable = true; break; } } if (delete emptyObject.myProperty) isConfigurable = true; assert(!isWritable && !isEnumerable && !isConfigurable);