// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 26.1.13 description: > Sets the new value. info: | 26.1.13 Reflect.set ( target, propertyKey, V [ , receiver ] ) ... 4. If receiver is not present, then a. Let receiver be target. 5. Return target.[[Set]](key, V, receiver). 9.1.9 [[Set]] ( P, V, Receiver) ... 5. If IsDataDescriptor(ownDesc) is true, then a. If ownDesc.[[Writable]] is false, return false. b. If Type(Receiver) is not Object, return false. c. Let existingDescriptor be Receiver.[[GetOwnProperty]](P). d. ReturnIfAbrupt(existingDescriptor). e. If existingDescriptor is not undefined, then i. If IsAccessorDescriptor(existingDescriptor) is true, return false. ii. If existingDescriptor.[[Writable]] is false, return false. iii. Let valueDesc be the PropertyDescriptor{[[Value]]: V}. iv. Return Receiver.[[DefineOwnProperty]](P, valueDesc). f. Else Receiver does not currently have a property P, i. Return CreateDataProperty(Receiver, P, V). ... ---*/ var o1 = {p: 43}; var result = Reflect.set(o1, 'p', 42); assert.sameValue(result, true, 'returns true on a successful setting'); assert.sameValue( o1.p, 42, 'sets the new value' ); var o2 = {p: 43}; var receiver = {p: 44}; var result = Reflect.set(o2, 'p', 42, receiver); assert.sameValue(result, true, 'returns true on a successful setting'); assert.sameValue(o2.p, 43, 'with a receiver, does not set a value on target'); assert.sameValue(receiver.p, 42, 'sets the new value on the receiver');