{"id":36096,"date":"2025-12-08T06:40:45","date_gmt":"2025-12-08T03:40:45","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/?p=36096"},"modified":"2025-12-08T06:40:45","modified_gmt":"2025-12-08T03:40:45","slug":"javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu\/","title":{"rendered":"JavaScript’te Nesne \u00d6zelliklerini Derinlemesine Anlamak: getOwnPropertyDescriptors Metodu"},"content":{"rendered":"

<\/p>\n

JavaScript’te Nesne \u00d6zelliklerini Derinlemesine Anlamak: getOwnPropertyDescriptors Metodu<\/h2>\n

JavaScript, dinamik ve esnek bir programlama dili olup, nesneler dilin temel yap\u0131 ta\u015flar\u0131ndan biridir. Nesneler, anahtar-de\u011fer \u00e7iftlerinden olu\u015fan koleksiyonlard\u0131r ve bu anahtarlar, nesnenin \u00f6zelliklerini (properties) temsil eder. Bir nesnenin \u00f6zelliklerini sadece de\u011ferleriyle de\u011fil, ayn\u0131 zamanda bu \u00f6zelliklerin nas\u0131l davrand\u0131\u011f\u0131n\u0131 belirleyen nitelikleriyle (attributes) birlikte anlamak, JavaScript’te daha g\u00fc\u00e7l\u00fc ve g\u00fcvenilir kod yazmak i\u00e7in kritik \u00f6neme sahiptir. \u0130\u015fte tam bu noktada Object.getOwnPropertyDescriptors()<\/code> metodu devreye girer.<\/p>\n

Bu makale, Object.getOwnPropertyDescriptors()<\/code> metodunun ne oldu\u011funu, nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, neden bu kadar \u00f6nemli oldu\u011funu ve \u00e7e\u015fitli kullan\u0131m senaryolar\u0131n\u0131 detayl\u0131 bir \u015fekilde inceleyecektir. Ayr\u0131ca, bu metodu di\u011fer benzer nesne inceleme y\u00f6ntemleriyle kar\u015f\u0131la\u015ft\u0131racak ve JavaScript geli\u015ftiricilerinin nesne manip\u00fclasyonunda kar\u015f\u0131la\u015ft\u0131klar\u0131 yayg\u0131n zorluklara nas\u0131l \u00e7\u00f6z\u00fcm sundu\u011funu a\u00e7\u0131klayacakt\u0131r.<\/p>\n

Giri\u015f: Neden getOwnPropertyDescriptors?<\/h3>\n

JavaScript’te bir nesnenin \u00f6zelliklerini listelemek veya incelemek i\u00e7in \u00e7e\u015fitli y\u00f6ntemler bulunur: Object.keys()<\/code>, Object.getOwnPropertyNames()<\/code>, Object.getOwnPropertySymbols()<\/code>, Reflect.ownKeys()<\/code>. Ancak bu y\u00f6ntemlerin hi\u00e7biri, bir \u00f6zelli\u011fin sadece ad\u0131n\u0131 veya de\u011ferini de\u011fil, ayn\u0131 zamanda onun tam “tan\u0131mlay\u0131c\u0131s\u0131n\u0131” (descriptor) d\u00f6nd\u00fcrmez. Bir \u00f6zellik tan\u0131mlay\u0131c\u0131s\u0131, bir \u00f6zelli\u011fin de\u011ferini (value<\/code>), yaz\u0131labilirli\u011fini (writable<\/code>), numaraland\u0131r\u0131labilirli\u011fini (enumerable<\/code>), yap\u0131land\u0131r\u0131labilirli\u011fini (configurable<\/code>) ve e\u011fer bir eri\u015fimci \u00f6zelli\u011fi ise (accessor property<\/code>) get<\/code> ve set<\/code> fonksiyonlar\u0131n\u0131 i\u00e7erir.<\/p>\n

Geleneksel olarak, tek bir \u00f6zelli\u011fin tan\u0131mlay\u0131c\u0131s\u0131n\u0131 almak i\u00e7in Object.getOwnPropertyDescriptor(obj, propName)<\/code> metodu kullan\u0131l\u0131rd\u0131. Ancak bir nesnenin t\u00fcm kendi \u00f6zelliklerinin tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 topluca almak gerekti\u011finde, geli\u015ftiriciler her bir \u00f6zellik i\u00e7in ayr\u0131 ayr\u0131 getOwnPropertyDescriptor<\/code> \u00e7a\u011fr\u0131s\u0131 yapmak zorunda kal\u0131yorlard\u0131 ki bu, \u00f6zellikle \u00e7ok say\u0131da \u00f6zelli\u011fe sahip nesneler i\u00e7in verimsiz ve tekrarl\u0131 bir s\u00fcre\u00e7ti.<\/p>\n

ES2017 (ECMAScript 2017) ile tan\u0131t\u0131lan Object.getOwnPropertyDescriptors()<\/code> metodu, bu soruna zarif ve verimli bir \u00e7\u00f6z\u00fcm sunar. Bu metot, bir nesnenin t\u00fcm kendi \u00f6zelliklerinin tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 tek bir \u00e7a\u011fr\u0131da d\u00f6nd\u00fcren bir nesne d\u00f6nd\u00fcrerek, nesne kopyalama, birle\u015ftirme, devralma ve metaprogramlama gibi geli\u015fmi\u015f senaryolarda hayati bir rol oynar. Bu sayede, bir nesneyi kopyalarken veya geni\u015fletirken sadece de\u011ferlerini de\u011fil, t\u00fcm davran\u0131\u015fsal niteliklerini de do\u011fru bir \u015fekilde aktarmak m\u00fcmk\u00fcn hale gelir.<\/p>\n

getOwnPropertyDescriptors Metodunun Temelleri<\/h3>\n

Object.getOwnPropertyDescriptors()<\/code> metodu, belirli bir nesnenin t\u00fcm kendi (own) \u00f6zelliklerinin (prototip zincirindeki \u00f6zellikler hari\u00e7) tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 i\u00e7eren bir nesne d\u00f6nd\u00fcr\u00fcr.<\/p>\n

S\u00f6zdizimi (Syntax)<\/h4>\n
Object.getOwnPropertyDescriptors(obj)<\/code><\/pre>\n
Parametreler<\/h4>\n
*   obj<\/code>: \u00d6zellik tan\u0131mlay\u0131c\u0131lar\u0131 al\u0131nacak olan nesne. Bu parametre bir nesne de\u011filse, \u00f6nce bir nesneye d\u00f6n\u00fc\u015ft\u00fcr\u00fclmeye \u00e7al\u0131\u015f\u0131l\u0131r. null<\/code> veya undefined<\/code> gibi ilkel de\u011ferler i\u00e7in bir TypeError<\/code> hatas\u0131 f\u0131rlat\u0131l\u0131r.<\/p>\n
D\u00f6n\u00fc\u015f De\u011feri<\/h4>\n
Metot, obj<\/code> nesnesinin t\u00fcm kendi \u00f6zellik tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 i\u00e7eren yeni bir nesne d\u00f6nd\u00fcr\u00fcr. Bu d\u00f6n\u00fc\u015f nesnesinin her bir anahtar\u0131, obj<\/code> nesnesinin bir \u00f6zelli\u011finin ad\u0131n\u0131 (string veya Symbol) temsil ederken, de\u011feri ise o \u00f6zelli\u011fin tan\u0131mlay\u0131c\u0131 nesnesidir.<\/p>\n
\u00d6zellik Tan\u0131mlay\u0131c\u0131 Nesnesinin Yap\u0131s\u0131<\/h4>\n
Her bir \u00f6zellik tan\u0131mlay\u0131c\u0131 nesnesi (property descriptor object) \u015fu anahtarlardan baz\u0131lar\u0131n\u0131 veya t\u00fcm\u00fcn\u00fc i\u00e7erir:<\/p>\n
*   value<\/code>: \u00d6zelli\u011fin de\u011feri. Sadece veri \u00f6zellikleri (data properties) i\u00e7in mevcuttur.
\n*   writable<\/code>: true<\/code> ise, \u00f6zelli\u011fin de\u011feri [[Value]]<\/code> de\u011fi\u015ftirilebilir. Sadece veri \u00f6zellikleri i\u00e7in mevcuttur. Varsay\u0131lan false<\/code>‘tur.
\n*   get<\/code>: \u00d6zelli\u011fin de\u011feri okundu\u011funda \u00e7a\u011fr\u0131lacak bir fonksiyon. Sadece eri\u015fimci \u00f6zellikleri (accessor properties) i\u00e7in mevcuttur.
\n*   set<\/code>: \u00d6zelli\u011fin de\u011feri de\u011fi\u015ftirildi\u011finde \u00e7a\u011fr\u0131lacak bir fonksiyon. Sadece eri\u015fimci \u00f6zellikleri i\u00e7in mevcuttur.
\n*   enumerable<\/code>: true<\/code> ise, \u00f6zellik for...in<\/code> d\u00f6ng\u00fcleri ve Object.keys()<\/code> gibi y\u00f6ntemlerle numaraland\u0131r\u0131labilir. Varsay\u0131lan false<\/code>‘tur.
\n*   configurable<\/code>: true<\/code> ise, \u00f6zelli\u011fin t\u00fcr\u00fc de\u011fi\u015ftirilebilir (veri \u00f6zelli\u011finden eri\u015fimci \u00f6zelli\u011fine veya tam tersi), silinebilir veya nitelikleri de\u011fi\u015ftirilebilir (\u00f6rne\u011fin writable<\/code>‘dan false<\/code>‘a ge\u00e7i\u015f hari\u00e7). Varsay\u0131lan false<\/code>‘tur.<\/p>\n
Bir \u00f6zelli\u011fin ya value<\/code> ve writable<\/code> nitelikleri ya da get<\/code> ve set<\/code> nitelikleri olabilir; her ikisi birden olamaz. E\u011fer bir \u00f6zellik tan\u0131mlay\u0131c\u0131s\u0131 value<\/code> veya writable<\/code> i\u00e7eriyorsa, bu bir “veri \u00f6zelli\u011fi tan\u0131mlay\u0131c\u0131s\u0131”d\u0131r. E\u011fer get<\/code> veya set<\/code> i\u00e7eriyorsa, bu bir “eri\u015fimci \u00f6zelli\u011fi tan\u0131mlay\u0131c\u0131s\u0131”d\u0131r.<\/p>\n
Basit Bir \u00d6rnek<\/h4>\n
const myObject = {\n  a: 1,\n  b: 2\n};\n\nObject.defineProperty(myObject, 'c', {\n  value: 3,\n  writable: false,\n  enumerable: true,\n  configurable: false\n});\n\nObject.defineProperty(myObject, 'd', {\n  get() { return this.a * 10; },\n  set(value) { this.a = value \/ 10; },\n  enumerable: false,\n  configurable: true\n});\n\nconst descriptors = Object.getOwnPropertyDescriptors(myObject);\nconsole.log(descriptors);\n\/* \u00c7\u0131kt\u0131:\n{\n  a: { value: 1, writable: true, enumerable: true, configurable: true },\n  b: { value: 2, writable: true, enumerable: true, configurable: true },\n  c: { value: 3, writable: false, enumerable: true, configurable: false },\n  d: {\n    get: [Function: get],\n    set: [Function: set],\n    enumerable: false,\n    configurable: true\n  }\n}\n*\/<\/code><\/pre>\n
Yukar\u0131daki \u00f6rnekte g\u00f6r\u00fcld\u00fc\u011f\u00fc gibi, myObject<\/code>‘\u0131n t\u00fcm kendi \u00f6zelliklerinin (a<\/code>, b<\/code>, c<\/code>, d<\/code>) tam tan\u0131mlay\u0131c\u0131lar\u0131 d\u00f6nd\u00fcr\u00fclm\u00fc\u015ft\u00fcr. a<\/code> ve b<\/code> varsay\u0131lan niteliklere sahipken, c<\/code> ve d<\/code> \u00f6zellikleri Object.defineProperty<\/code> ile \u00f6zel olarak yap\u0131land\u0131r\u0131lm\u0131\u015f ve bu nitelikler d\u00f6n\u00fc\u015f de\u011ferinde do\u011fru bir \u015fekilde yans\u0131t\u0131lm\u0131\u015ft\u0131r.<\/p>\n
Kullan\u0131m Senaryolar\u0131<\/h3>\n
Object.getOwnPropertyDescriptors()<\/code> metodunun as\u0131l g\u00fcc\u00fc, karma\u015f\u0131k nesne manip\u00fclasyonlar\u0131nda ve metaprogramlama senaryolar\u0131nda ortaya \u00e7\u0131kar.<\/p>\n
1. Derin Kopyalama (Deep Cloning) ve Nesne Birle\u015ftirme (Object Merging)<\/h4>\n
JavaScript’te nesneleri kopyalamak veya birle\u015ftirmek yayg\u0131n bir i\u015flemdir. Object.assign()<\/code> veya yay\u0131lma operat\u00f6r\u00fc (...<\/code>) gibi y\u00f6ntemler, genellikle sadece \u00f6zelliklerin de\u011ferlerini<\/em> kopyalar. Ancak, bir \u00f6zelli\u011fin writable<\/code>, enumerable<\/code>, configurable<\/code> nitelikleri veya get<\/code>\/set<\/code> eri\u015fimcileri gibi davran\u0131\u015fsal nitelikleri kopyalanmaz. Bu, \u00f6zellikle bir nesnenin tam bir klonunu olu\u015fturmak veya iki nesneyi t\u00fcm nitelikleriyle birle\u015ftirmek istedi\u011finizde sorunlara yol a\u00e7abilir.<\/p>\n
Object.getOwnPropertyDescriptors()<\/code> bu sorunu \u00e7\u00f6zer. Bir nesnenin t\u00fcm \u00f6zellik tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 al\u0131p, bu tan\u0131mlay\u0131c\u0131lar\u0131 Object.defineProperties()<\/code> ile yeni bir nesneye uygulayarak tam bir klon olu\u015fturabilirsiniz:<\/p>\n
const sourceObject = {\n  value: 42,\n  get computed() { return this.value * 2; }\n};\n\nObject.defineProperty(sourceObject, 'id', {\n  value: 'abc-123',\n  writable: false,\n  enumerable: false,\n  configurable: false\n});\n\n\/\/ Geleneksel kopyalama (sadece de\u011ferleri kopyalar)\nconst shallowCopy = { ...sourceObject };\nconsole.log('Shallow Copy:', shallowCopy);\n\/\/ \u00c7\u0131kt\u0131: { value: 42, computed: 84 } - 'id' \u00f6zelli\u011fi kay\u0131p, 'computed' bir veri \u00f6zelli\u011fine d\u00f6n\u00fc\u015ft\u00fc.\n\n\/\/ Derin kopyalama (t\u00fcm nitelikleri kopyalar)\nconst deepCopy = Object.create(Object.getPrototypeOf(sourceObject),\n                                Object.getOwnPropertyDescriptors(sourceObject));\n\nconsole.log('Deep Copy:', deepCopy);\n\/\/ \u00c7\u0131kt\u0131: { value: 42, computed: 84 }\nconsole.log('Deep Copy ID:', Object.getOwnPropertyDescriptor(deepCopy, 'id'));\n\/* \u00c7\u0131kt\u0131:\n{ value: 'abc-123', writable: false, enumerable: false, configurable: false }\n*\/\nconsole.log('Deep Copy Computed Descriptor:', Object.getOwnPropertyDescriptor(deepCopy, 'computed'));\n\/* \u00c7\u0131kt\u0131:\n{\n  get: [Function: get computed],\n  set: undefined,\n  enumerable: true,\n  configurable: true\n}\n*\/<\/code><\/pre>\n
Yukar\u0131daki \u00f6rnekte deepCopy<\/code>, sourceObject<\/code>‘\u0131n t\u00fcm \u00f6zelliklerini, id<\/code> gibi numaraland\u0131r\u0131lamayan ve yaz\u0131labilir olmayan \u00f6zellikleri dahil, eri\u015fimci \u00f6zellikleri (computed<\/code>) de koruyarak kopyalam\u0131\u015ft\u0131r. Bu, Object.getOwnPropertyDescriptors()<\/code> ve Object.defineProperties()<\/code> kombinasyonu sayesinde m\u00fcmk\u00fcn olmu\u015ftur.<\/p>\n
Benzer \u015fekilde, nesneleri birle\u015ftirirken de bu yakla\u015f\u0131m\u0131 kullanabilirsiniz:<\/p>\n
const obj1 = { a: 1 };\nObject.defineProperty(obj1, 'b', { value: 2, enumerable: false });\n\nconst obj2 = { c: 3 };\nObject.defineProperty(obj2, 'd', { get() { return this._d; }, set(val) { this._d = val; } });\n\nconst mergedObject = Object.create(null); \/\/ Yeni bir bo\u015f nesne olu\u015ftur\nObject.defineProperties(mergedObject, Object.getOwnPropertyDescriptors(obj1));\nObject.defineProperties(mergedObject, Object.getOwnPropertyDescriptors(obj2));\n\nconsole.log(Object.getOwnPropertyDescriptors(mergedObject));\n\/* \u00c7\u0131kt\u0131:\n{\n  a: { value: 1, writable: true, enumerable: true, configurable: true },\n  b: { value: 2, writable: false, enumerable: false, configurable: false },\n  c: { value: 3, writable: true, enumerable: true, configurable: true },\n  d: {\n    get: [Function: get],\n    set: [Function: set],\n    enumerable: true,\n    configurable: true\n  }\n}\n*\/<\/code><\/pre>\n
Bu y\u00f6ntem, nesneleri birle\u015ftirirken \u00f6zellik niteliklerinin korunmas\u0131n\u0131 sa\u011flar, bu da Object.assign()<\/code>‘\u0131n yapamad\u0131\u011f\u0131 bir \u015feydir.<\/p>\n
2. Nesne Geni\u015fletme ve Devralma (Object Extension and Inheritance)<\/h4>\n
Mevcut bir nesneden \u00f6zellik niteliklerini miras alarak yeni nesneler olu\u015fturmak veya bir s\u0131n\u0131f\u0131n\/nesnenin davran\u0131\u015f\u0131n\u0131 geni\u015fletmek i\u00e7in getOwnPropertyDescriptors<\/code> kullan\u0131labilir. \u00d6zellikle, bir s\u0131n\u0131f\u0131 geni\u015fletirken veya bir miksin (mixin) uygularken, temel nesnenin veya s\u0131n\u0131f\u0131n \u00f6zellik tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 korumak isteyebilirsiniz.<\/p>\n
class BaseService {\n  constructor() {\n    this._apiEndpoint = '\/api\/v1';\n  }\n\n  get apiEndpoint() {\n    return this._apiEndpoint;\n  }\n\n  set apiEndpoint(value) {\n    if (typeof value === 'string' && value.startsWith('\/')) {\n      this._apiEndpoint = value;\n    } else {\n      console.warn('Invalid API endpoint.');\n    }\n  }\n\n  fetchData(path) {\n    return fetch(this.apiEndpoint + path).then(res => res.json());\n  }\n}\n\nclass ExtendedService extends BaseService {\n  constructor() {\n    super();\n    this.version = '2.0';\n  }\n}\n\n\/\/ BaseService'in \u00f6zellik tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 al\nconst baseServiceDescriptors = Object.getOwnPropertyDescriptors(BaseService.prototype);\n\n\/\/ ExtendedService'in prototipine bu tan\u0131mlay\u0131c\u0131lar\u0131 uygula\n\/\/ Bu, BaseService'in t\u00fcm metotlar\u0131n\u0131 ve eri\u015fimcilerini koruyarak ExtendedService'i olu\u015fturur.\n\/\/ Not: S\u0131n\u0131f geni\u015fletme (extends) zaten bunu yapar, ancak bu \u00f6rnek miksinler veya dinamik devralma i\u00e7in bir ilkeyi g\u00f6sterir.\nObject.defineProperties(ExtendedService.prototype, baseServiceDescriptors);\n\nconst service = new ExtendedService();\nconsole.log(service.apiEndpoint); \/\/ \/api\/v1 (getter \u00e7al\u0131\u015f\u0131r)\nservice.apiEndpoint = '\/new-api';\nconsole.log(service.apiEndpoint); \/\/ \/new-api (setter \u00e7al\u0131\u015f\u0131r)<\/code><\/pre>\n
Bu \u00f6rnek do\u011frudan s\u0131n\u0131f devralma ile daha iyi \u00e7\u00f6z\u00fclse de, Object.getOwnPropertyDescriptors<\/code>‘\u0131n temel nesneden \u00f6zellik tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 al\u0131p ba\u015fka bir nesneye uygulayarak devralma veya geni\u015fletme mekanizmalar\u0131n\u0131 dinamik olarak olu\u015fturma potansiyelini g\u00f6stermektedir. \u00d6zellikle, Object.create()<\/code> ile birlikte kullan\u0131ld\u0131\u011f\u0131nda g\u00fc\u00e7l\u00fc bir ara\u00e7 haline gelir.<\/p>\n
3. Metaprogramlama ve Proxy Nesneler (Metaprogramming and Proxy Objects)<\/h4>\n
JavaScript’in Proxy API’si, nesne \u00fczerinde temel i\u015flemleri (\u00f6rne\u011fin \u00f6zellik aramas\u0131, atama, numaraland\u0131rma) yakalaman\u0131za ve bu i\u015flemleri \u00f6zelle\u015ftirmenize olanak tan\u0131r. getOwnPropertyDescriptors<\/code> metodu, Proxy handler’lar\u0131nda ownKeys<\/code> veya getOwnPropertyDescriptor<\/code> tuzaklar\u0131n\u0131 (trap) uygularken \u00e7ok kullan\u0131\u015fl\u0131d\u0131r. Bir nesnenin t\u00fcm \u00f6zellik tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 almak, bir Proxy’nin hedef nesnenin yap\u0131s\u0131 hakk\u0131nda kapsaml\u0131 bilgi edinmesini ve bu bilgiyi kullanarak daha ak\u0131ll\u0131 davran\u0131\u015flar sergilemesini sa\u011flar.<\/p>\n
const target = {\n  data: 100,\n  get computed() { return this.data * 2; }\n};\n\nObject.defineProperty(target, 'secret', {\n  value: 'shhh',\n  enumerable: false,\n  configurable: false\n});\n\nconst handler = {\n  \/\/ ownKeys tuza\u011f\u0131, Object.keys, Object.getOwnPropertyNames, Object.getOwnPropertySymbols, Reflect.ownKeys gibi y\u00f6ntemler taraf\u0131ndan \u00e7a\u011fr\u0131l\u0131r.\n  ownKeys(target) {\n    console.log('Proxy: ownKeys \u00e7a\u011fr\u0131ld\u0131.');\n    return Reflect.ownKeys(target); \/\/ Varsay\u0131lan davran\u0131\u015f\u0131 taklit et\n  },\n  \/\/ getOwnPropertyDescriptor tuza\u011f\u0131, Object.getOwnPropertyDescriptor veya Object.getOwnPropertyDescriptors taraf\u0131ndan \u00e7a\u011fr\u0131l\u0131r.\n  getOwnPropertyDescriptor(target, prop) {\n    console.log(Proxy: getOwnPropertyDescriptor('${String(prop)}') \u00e7a\u011fr\u0131ld\u0131.<\/code>);\n    const descriptor = Reflect.getOwnPropertyDescriptor(target, prop);\n    if (prop === 'secret') {\n      \/\/ 'secret' \u00f6zelli\u011finin g\u00f6r\u00fcn\u00fcrl\u00fc\u011f\u00fcn\u00fc gizle\n      return { ...descriptor, enumerable: false }; \/\/ Zaten false ama \u00f6rnek olsun\n    }\n    return descriptor;\n  }\n};\n\nconst proxy = new Proxy(target, handler);\n\nconsole.log(Object.getOwnPropertyDescriptors(proxy));\n\/* \u00c7\u0131kt\u0131:\nProxy: getOwnPropertyDescriptor('data') \u00e7a\u011fr\u0131ld\u0131.\nProxy: getOwnPropertyDescriptor('computed') \u00e7a\u011fr\u0131ld\u0131.\nProxy: getOwnPropertyDescriptor('secret') \u00e7a\u011fr\u0131ld\u0131.\n{\n  data: { value: 100, writable: true, enumerable: true, configurable: true },\n  computed: {\n    get: [Function: get computed],\n    set: undefined,\n    enumerable: true,\n    configurable: true\n  },\n  secret: { value: 'shhh', writable: false, enumerable: false, configurable: false } \/\/ Proxy tuza\u011f\u0131 burada 'secret' i\u00e7in bir de\u011fi\u015fiklik yapmad\u0131 ama yapabilirdi.\n}\n*\/<\/code><\/pre>\n
Yukar\u0131daki \u00f6rnekte, Object.getOwnPropertyDescriptors(proxy)<\/code> \u00e7a\u011fr\u0131ld\u0131\u011f\u0131nda, Proxy’nin getOwnPropertyDescriptor<\/code> tuza\u011f\u0131 her bir \u00f6zellik i\u00e7in ayr\u0131 ayr\u0131 \u00e7a\u011fr\u0131l\u0131r. Bu, proxy’nin her bir \u00f6zelli\u011fin tan\u0131mlay\u0131c\u0131s\u0131n\u0131 dinamik olarak de\u011fi\u015ftirmesine veya filtrelemesine olanak tan\u0131r.<\/p>\n
4. Hata Ay\u0131klama ve \u0130nceleme (Debugging and Inspection)<\/h4>\n
Karma\u015f\u0131k bir nesnenin i\u00e7 yap\u0131s\u0131n\u0131 ve davran\u0131\u015f\u0131n\u0131 anlamak, hata ay\u0131klama s\u00fcrecinde kritik \u00f6neme sahiptir. Object.getOwnPropertyDescriptors()<\/code> metodu, bir nesnenin t\u00fcm \u00f6zelliklerinin tam niteliklerini tek bir bak\u0131\u015fta g\u00f6rmenizi sa\u011flayarak bu s\u00fcreci kolayla\u015ft\u0131r\u0131r. Hangi \u00f6zelliklerin yaz\u0131labilir, hangilerinin numaraland\u0131r\u0131labilir olmad\u0131\u011f\u0131n\u0131 veya hangi \u00f6zelliklerin eri\u015fimci oldu\u011funu h\u0131zl\u0131ca tespit edebilirsiniz.<\/p>\n
const config = {\n  port: 8080,\n  host: 'localhost'\n};\n\nObject.defineProperty(config, 'version', {\n  value: '1.0.0',\n  writable: false,\n  enumerable: true,\n  configurable: false\n});\n\nObject.defineProperty(config, 'secretKey', {\n  value: 'my-super-secret',\n  writable: false,\n  enumerable: false, \/\/ Gizli\n  configurable: false\n});\n\nconsole.log(Object.getOwnPropertyDescriptors(config));\n\/* \u00c7\u0131kt\u0131:\n{\n  port: { value: 8080, writable: true, enumerable: true, configurable: true },\n  host: { value: 'localhost', writable: true, enumerable: true, configurable: true },\n  version: { value: '1.0.0', writable: false, enumerable: true, configurable: false },\n  secretKey: { value: 'my-super-secret', writable: false, enumerable: false, configurable: false }\n}\n*\/<\/code><\/pre>\n
Bu \u00e7\u0131kt\u0131, config<\/code> nesnesinin secretKey<\/code> \u00f6zelli\u011finin numaraland\u0131r\u0131lamaz oldu\u011funu ve version<\/code> \u00f6zelli\u011finin yaz\u0131labilir olmad\u0131\u011f\u0131n\u0131 a\u00e7\u0131k\u00e7a g\u00f6sterir. Bu t\u00fcr bilgiler, nesnenin neden belirli bir \u015fekilde davrand\u0131\u011f\u0131n\u0131 anlaman\u0131za yard\u0131mc\u0131 olabilir.<\/p>\n
5. Mod\u00fcl Geli\u015ftirme ve API Tasar\u0131m\u0131<\/h4>\n
Mod\u00fcller aras\u0131 nesneleri d\u0131\u015fa aktar\u0131rken veya bir API tasarlarken, nesnelerin davran\u0131\u015fsal niteliklerini (\u00f6rne\u011fin bir \u00f6zelli\u011fin de\u011fi\u015ftirilemez olmas\u0131n\u0131) korumak \u00f6nemlidir. Object.getOwnPropertyDescriptors()<\/code> bu senaryolarda nesnelerin do\u011fru \u015fekilde d\u0131\u015fa aktar\u0131lmas\u0131n\u0131 ve kullan\u0131lmas\u0131n\u0131 sa\u011flar.<\/p>\n
\u00d6rne\u011fin, bir konfig\u00fcrasyon nesnesini d\u0131\u015fa aktar\u0131yorsan\u0131z ve baz\u0131 \u00f6zelliklerin de\u011fi\u015ftirilmesini istemiyorsan\u0131z, writable: false<\/code> olarak ayarlayabilirsiniz. getOwnPropertyDescriptors<\/code> ile bu niteliklerin mod\u00fcl\u00fc kullanan kod taraf\u0131ndan da korunmas\u0131n\u0131 sa\u011flayabilirsiniz.<\/p>\n
\/\/ config.js\nconst _config = {\n  appName: 'My App',\n  version: '1.0.0'\n};\n\nObject.defineProperty(_config, 'version', {\n  writable: false,\n  enumerable: true,\n  configurable: false\n});\n\nfunction createConfig() {\n  return Object.create(null, Object.getOwnPropertyDescriptors(_config));\n}\n\nexport { createConfig };\n\n\/\/ app.js\nimport { createConfig } from '.\/config.js';\n\nconst appConfig = createConfig();\nconsole.log(appConfig.version); \/\/ 1.0.0\n\ntry {\n  appConfig.version = '2.0.0'; \/\/ Hata verir (strict modda) veya sessizce ba\u015far\u0131s\u0131z olur\n} catch (e) {\n  console.error(e); \/\/ TypeError: Cannot assign to read only property 'version' of object '#'\n}\n\nconsole.log(appConfig.version); \/\/ Hala 1.0.0<\/code><\/pre>\n
Bu yakla\u015f\u0131m, d\u0131\u015fa aktar\u0131lan konfig\u00fcrasyon nesnesinin version<\/code> \u00f6zelli\u011finin, mod\u00fcl\u00fc kullanan kod taraf\u0131ndan de\u011fi\u015ftirilemez olmas\u0131n\u0131 garantiler.<\/p>\n
getOwnPropertyDescriptors vs. Di\u011fer Y\u00f6ntemler<\/h3>\n
Object.getOwnPropertyDescriptors()<\/code> metodu, JavaScript’teki di\u011fer nesne inceleme y\u00f6ntemlerinden \u00f6nemli farkl\u0131l\u0131klara sahiptir. Bu farkl\u0131l\u0131klar\u0131 anlamak, do\u011fru arac\u0131 do\u011fru senaryoda kullanman\u0131z\u0131 sa\u011flar.<\/p>\n
Object.getOwnPropertyDescriptor(obj, propName)<\/code><\/h4>\n
*   Fark:<\/strong> getOwnPropertyDescriptor<\/code> tek bir \u00f6zelli\u011fin tan\u0131mlay\u0131c\u0131s\u0131n\u0131 d\u00f6nd\u00fcr\u00fcrken, getOwnPropertyDescriptors<\/code> t\u00fcm kendi \u00f6zelliklerinin tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 i\u00e7eren bir nesne d\u00f6nd\u00fcr\u00fcr.
\n*   Kullan\u0131m:<\/strong> Belirli bir \u00f6zelli\u011fin niteliklerini incelemek veya de\u011fi\u015ftirmek istedi\u011finizde getOwnPropertyDescriptor<\/code> kullan\u0131\u015fl\u0131d\u0131r. T\u00fcm \u00f6zelliklerin niteliklerini topluca almak gerekti\u011finde ise getOwnPropertyDescriptors<\/code> tercih edilir.<\/p>\n
Object.keys(obj)<\/code><\/h4>\n
*   Fark:<\/strong> Object.keys()<\/code> sadece bir nesnenin kendi, numaraland\u0131r\u0131labilir (enumerable) ve string anahtarl\u0131 \u00f6zelliklerinin adlar\u0131n\u0131 bir dizi olarak d\u00f6nd\u00fcr\u00fcr. \u00d6zellik de\u011ferlerini veya tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 i\u00e7ermez.
\n*   Kullan\u0131m:<\/strong> Bir nesnenin “y\u00fczeyini” olu\u015fturan, genellikle kullan\u0131c\u0131 aray\u00fcz\u00fcnde g\u00f6sterilmesi veya JSON’a d\u00f6n\u00fc\u015ft\u00fcr\u00fclmesi ama\u00e7lanan \u00f6zellik adlar\u0131n\u0131 listelemek i\u00e7in idealdir.<\/p>\n
Object.getOwnPropertyNames(obj)<\/code><\/h4>\n
*   Fark:<\/strong> Object.getOwnPropertyNames()<\/code> bir nesnenin kendi, string anahtarl\u0131 \u00f6zelliklerinin (numaraland\u0131r\u0131labilir olup olmad\u0131klar\u0131na bak\u0131lmaks\u0131z\u0131n) adlar\u0131n\u0131 bir dizi olarak d\u00f6nd\u00fcr\u00fcr. \u00d6zellik de\u011ferlerini veya tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 i\u00e7ermez.
\n*   Kullan\u0131m:<\/strong> Gizli (numaraland\u0131r\u0131lamayan) string anahtarl\u0131 \u00f6zellikleri de dahil olmak \u00fczere, bir nesnenin t\u00fcm string anahtarl\u0131 \u00f6zellik adlar\u0131n\u0131 almak i\u00e7in kullan\u0131l\u0131r.<\/p>\n
Object.getOwnPropertySymbols(obj)<\/code><\/h4>\n
*   Fark:<\/strong> Object.getOwnPropertySymbols()<\/code> bir nesnenin kendi, symbol anahtarl\u0131 \u00f6zelliklerinin adlar\u0131n\u0131 bir dizi olarak d\u00f6nd\u00fcr\u00fcr. \u00d6zellik de\u011ferlerini veya tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 i\u00e7ermez.
\n*   Kullan\u0131m:<\/strong> Yaln\u0131zca Symbol olarak tan\u0131mlanm\u0131\u015f \u00f6zellik adlar\u0131n\u0131 almak i\u00e7in kullan\u0131l\u0131r.<\/p>\n
Reflect.ownKeys(obj)<\/code><\/h4>\n
*   Fark:<\/strong> Reflect.ownKeys()<\/code> bir nesnenin kendi, hem string hem de symbol anahtarl\u0131 t\u00fcm \u00f6zelliklerinin adlar\u0131n\u0131 bir dizi olarak d\u00f6nd\u00fcr\u00fcr. \u00d6zellik de\u011ferlerini veya tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 i\u00e7ermez.
\n*   Kullan\u0131m:<\/strong> Bir nesnenin t\u00fcm kendi \u00f6zellik anahtarlar\u0131n\u0131 (hem string hem de Symbol) tek bir listede almak i\u00e7in en kapsaml\u0131 y\u00f6ntemdir.<\/p>\n
\u00d6zetle, Object.getOwnPropertyDescriptors()<\/code> bu y\u00f6ntemlerden farkl\u0131 olarak, \u00f6zelliklerin t\u00fcm tan\u0131mlay\u0131c\u0131lar\u0131n\u0131<\/em> (de\u011fer, yaz\u0131labilirlik, numaraland\u0131r\u0131labilirlik, yap\u0131land\u0131r\u0131labilirlik, get\/set eri\u015fimcileri) d\u00f6nd\u00fcren tek metottur.<\/strong> Bu, bir nesnenin tam yap\u0131s\u0131n\u0131 ve davran\u0131\u015f\u0131n\u0131 kopyalamak, geni\u015fletmek veya incelemek i\u00e7in onu vazge\u00e7ilmez k\u0131lar.<\/p>\n
const obj = {};\nobj.a = 1;\nObject.defineProperty(obj, 'b', { value: 2, enumerable: false });\nObject.defineProperty(obj, Symbol('c'), { value: 3, configurable: false });\n\nconsole.log('Object.keys:', Object.keys(obj)); \/\/ ['a']\nconsole.log('Object.getOwnPropertyNames:', Object.getOwnPropertyNames(obj)); \/\/ ['a', 'b']\nconsole.log('Object.getOwnPropertySymbols:', Object.getOwnPropertySymbols(obj)); \/\/ [Symbol(c)]\nconsole.log('Reflect.ownKeys:', Reflect.ownKeys(obj)); \/\/ ['a', 'b', Symbol(c)]\nconsole.log('Object.getOwnPropertyDescriptors:', Object.getOwnPropertyDescriptors(obj));\n\/* \u00c7\u0131kt\u0131:\n{\n  a: { value: 1, writable: true, enumerable: true, configurable: true },\n  b: { value: 2, writable: true, enumerable: false, configurable: true },\n  [Symbol(c)]: { value: 3, writable: true, enumerable: false, configurable: false }\n}\n*\/<\/code><\/pre>\n
Bu kar\u015f\u0131la\u015ft\u0131rmal\u0131 \u00f6rnek, Object.getOwnPropertyDescriptors()<\/code>‘\u0131n di\u011fer y\u00f6ntemlerden ne kadar daha fazla bilgi sa\u011flad\u0131\u011f\u0131n\u0131 a\u00e7\u0131k\u00e7a g\u00f6stermektedir.<\/p>\n
Dikkat Edilmesi Gerekenler ve S\u0131n\u0131rlamalar<\/h3>\n
Object.getOwnPropertyDescriptors()<\/code> g\u00fc\u00e7l\u00fc bir ara\u00e7 olsa da, kullan\u0131rken ak\u0131lda tutulmas\u0131 gereken baz\u0131 noktalar vard\u0131r:<\/p>\n
1.  Sadece Kendi \u00d6zellikler (Own Properties):<\/strong> Metot, yaln\u0131zca do\u011frudan nesnenin kendisine ait olan \u00f6zellikleri (own properties) d\u00f6nd\u00fcr\u00fcr. Nesnenin prototip zincirindeki miras al\u0131nan \u00f6zellikleri dikkate almaz. Miras al\u0131nan \u00f6zellikleri de dahil etmek isterseniz, prototip zincirini manuel olarak dola\u015fman\u0131z gerekir.
\n2.  D\u00f6n\u00fc\u015f De\u011feri Bir Nesnedir:<\/strong> Metot, \u00f6zellik tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 i\u00e7eren bir nesne d\u00f6nd\u00fcr\u00fcr, bir dizi de\u011fil. Bu nesnenin anahtarlar\u0131 \u00f6zellik adlar\u0131 (string veya Symbol), de\u011ferleri ise \u00f6zellik tan\u0131mlay\u0131c\u0131 nesneleridir.
\n3.  Performans Etkisi:<\/strong> Genellikle, modern JavaScript motorlar\u0131nda Object.getOwnPropertyDescriptors()<\/code>‘\u0131n performans\u0131 olduk\u00e7a iyidir. Ancak, \u00e7ok b\u00fcy\u00fck say\u0131da \u00f6zelli\u011fe sahip nesneler \u00fczerinde s\u0131k\u00e7a \u00e7a\u011fr\u0131ld\u0131\u011f\u0131nda veya \u00e7ok say\u0131da nesne \u00fczerinde tekrarl\u0131 olarak kullan\u0131ld\u0131\u011f\u0131nda, potansiyel olarak performans\u0131 etkileyebilir. \u00c7o\u011fu uygulamada bu bir sorun te\u015fkil etmez.
\n4.  \u0130lkel De\u011ferler:<\/strong> Metot, parametre olarak bir ilkel de\u011fer (\u00f6rne\u011fin string, number, boolean, Symbol, BigInt) al\u0131rsa, bu de\u011feri ge\u00e7ici bir nesneye d\u00f6n\u00fc\u015ft\u00fcr\u00fcr ve bu nesnenin kendi \u00f6zellik tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 d\u00f6nd\u00fcr\u00fcr. Ancak null<\/code> veya undefined<\/code> i\u00e7in bir TypeError<\/code> f\u0131rlat\u0131r.<\/p>\n
console.log(Object.getOwnPropertyDescriptors('hello'));\n    \/* \u00c7\u0131kt\u0131:\n    {\n      '0': { value: 'h', writable: false, enumerable: true, configurable: false },\n      '1': { value: 'e', writable: false, enumerable: true, configurable: false },\n      '2': { value: 'l', writable: false, enumerable: true, configurable: false },\n      '3': { value: 'l', writable: false, enumerable: true, configurable: false },\n      '4': { value: 'o', writable: false, enumerable: true, configurable: false },\n      length: { value: 5, writable: false, enumerable: false, configurable: false }\n    }\n    *\/\n    try {\n      Object.getOwnPropertyDescriptors(null);\n    } catch (e) {\n      console.error(e.message); \/\/ Cannot convert undefined or null to object\n    }<\/code><\/pre>\n
5.  Taray\u0131c\u0131 ve Node.js Uyumlulu\u011fu:<\/strong> Object.getOwnPropertyDescriptors()<\/code> ES2017 standard\u0131n\u0131n bir par\u00e7as\u0131d\u0131r ve modern taray\u0131c\u0131lar\u0131n ve Node.js’in \u00e7o\u011fu s\u00fcr\u00fcm\u00fcnde (Node.js 8+ gibi) desteklenir. Eski ortamlarda kullanmak i\u00e7in polyfill gerekebilir.<\/p>\n
Geli\u015fmi\u015f Kullan\u0131m \u0130pu\u00e7lar\u0131<\/h3>\n
Object.getOwnPropertyDescriptors()<\/code> metodunun potansiyelini daha da art\u0131rmak i\u00e7in baz\u0131 geli\u015fmi\u015f ipu\u00e7lar\u0131:<\/p>\n
*   Prototip Zincirini Kopyalama:<\/strong> Sadece kendi \u00f6zelliklerini de\u011fil, ayn\u0131 zamanda prototip zincirini de derinlemesine kopyalamak isterseniz, Object.getPrototypeOf()<\/code> ile birlikte getOwnPropertyDescriptors<\/code>‘\u0131 \u00f6zyinelemeli olarak kullanabilirsiniz.<\/p>\n
function deepCloneWithPrototypes(obj) {\n      if (typeof obj !== 'object' || obj === null) {\n        return obj;\n      }\n\n      const clone = Object.create(deepCloneWithPrototypes(Object.getPrototypeOf(obj)));\n      return Object.defineProperties(clone, Object.getOwnPropertyDescriptors(obj));\n    }\n\n    const proto = { protoProp: 'protoValue' };\n    const myObj = Object.create(proto, {\n      ownProp: { value: 123, enumerable: true },\n      accessorProp: { get() { return this.ownProp * 2; }, enumerable: true }\n    });\n\n    const clonedObj = deepCloneWithPrototypes(myObj);\n    console.log(clonedObj.ownProp); \/\/ 123\n    console.log(clonedObj.accessorProp); \/\/ 246\n    console.log(clonedObj.protoProp); \/\/ protoValue\n    console.log(Object.getOwnPropertyDescriptor(clonedObj, 'accessorProp'));<\/code><\/pre>\n
    Bu fonksiyon, bir nesneyi ve t\u00fcm prototip zincirini, \u00f6zellik nitelikleri de dahil olmak \u00fczere kopyalar.<\/p>\n
*   Miksinler Olu\u015fturma:<\/strong> getOwnPropertyDescriptors<\/code>‘\u0131 kullanarak, bir nesnenin davran\u0131\u015f\u0131n\u0131 ba\u015fka bir nesneye t\u00fcm nitelikleriyle birlikte “kar\u0131\u015ft\u0131ran” g\u00fc\u00e7l\u00fc miksin fonksiyonlar\u0131 olu\u015fturabilirsiniz.<\/p>\n
const LoggerMixin = {\n      log(message) {\n        console.log([${this.name || 'Unnamed'}] ${message}<\/code>);\n      },\n      warn(message) {\n        console.warn([${this.name || 'Unnamed'}] WARNING: ${message}<\/code>);\n      }\n    };\n\n    Object.defineProperty(LoggerMixin, 'name', {\n      value: 'Logger',\n      writable: false,\n      enumerable: false,\n      configurable: false\n    });\n\n    function applyMixin(target, mixin) {\n      return Object.defineProperties(target, Object.getOwnPropertyDescriptors(mixin));\n    }\n\n    class MyClass {\n      constructor(name) {\n        this.name = name;\n      }\n    }\n\n    applyMixin(MyClass.prototype, LoggerMixin);\n\n    const instance = new MyClass('MyInstance');\n    instance.log('Hello from instance!'); \/\/ [MyInstance] Hello from instance!\n    console.log(Object.getOwnPropertyDescriptor(MyClass.prototype, 'name')); \/\/ { value: 'Logger', writable: false, enumerable: false, configurable: false }<\/code><\/pre>\n
    Bu \u00f6rnekte, LoggerMixin<\/code>‘in name<\/code> \u00f6zelli\u011fi numaraland\u0131r\u0131lamaz ve yaz\u0131labilir de\u011fildir, ve bu nitelik applyMixin<\/code> ile MyClass.prototype<\/code>‘a do\u011fru bir \u015fekilde aktar\u0131l\u0131r.<\/p>\n
*   Nesne De\u011fi\u015ftirilemezli\u011fini Sa\u011flama:<\/strong> Bir nesneyi dondururken (Object.freeze()<\/code>) veya m\u00fch\u00fcrlerken (Object.seal()<\/code>), getOwnPropertyDescriptors<\/code> ile mevcut tan\u0131mlay\u0131c\u0131lar\u0131 inceleyerek hangi \u00f6zelliklerin etkilenece\u011fini \u00f6nceden anlayabilirsiniz.<\/p>\n
Sonu\u00e7<\/h3>\n
Object.getOwnPropertyDescriptors()<\/code> metodu, JavaScript’in nesne modelini derinlemesine anlamak ve manip\u00fcle etmek isteyen geli\u015ftiriciler i\u00e7in vazge\u00e7ilmez bir ara\u00e7t\u0131r. Bir nesnenin t\u00fcm kendi \u00f6zelliklerinin tan\u0131mlay\u0131c\u0131lar\u0131n\u0131 tek bir \u00e7a\u011fr\u0131da d\u00f6nd\u00fcrerek, sadece de\u011ferleri de\u011fil, ayn\u0131 zamanda \u00f6zelliklerin davran\u0131\u015fsal niteliklerini de kopyalama, birle\u015ftirme, devralma ve inceleme yetene\u011fi sunar.<\/p>\n
Bu metot, \u00f6zellikle derin kopyalama, karma\u015f\u0131k nesne birle\u015ftirme, dinamik nesne geni\u015fletme, metaprogramlama (Proxy API ile) ve hata ay\u0131klama gibi geli\u015fmi\u015f senaryolarda kritik bir rol oynar. Di\u011fer nesne inceleme y\u00f6ntemleri sadece \u00f6zellik adlar\u0131n\u0131 veya belirli tan\u0131mlay\u0131c\u0131lar\u0131 sa\u011flarken, getOwnPropertyDescriptors<\/code> tam ve kapsaml\u0131 bir g\u00f6r\u00fcn\u00fcm sunar.<\/p>\n
ES2017 ile gelen bu \u00f6zellik, JavaScript geli\u015ftiricilerinin daha sa\u011flam, esnek ve \u00f6ng\u00f6r\u00fclebilir nesne tabanl\u0131 \u00e7\u00f6z\u00fcmler olu\u015fturmas\u0131na olanak tan\u0131m\u0131\u015ft\u0131r. Object.getOwnPropertyDescriptors()<\/code>‘\u0131 ara\u00e7 setinize eklemek, nesne manip\u00fclasyonu becerilerinizi bir sonraki seviyeye ta\u015f\u0131yacakt\u0131r.<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"JavaScript’te Nesne \u00d6zelliklerini Derinlemesine Anlamak: getOwnPropertyDescriptors Metodu\nJavaScript, dinamik ve esnek bir programlama dili olup, ne","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[129],"tags":[],"class_list":{"0":"post-36096","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-javascript","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\nJavaScript'te Nesne \u00d6zelliklerini Derinlemesine Anlamak: getOwnPropertyDescriptors Metodu - Kodlar\u0131n Gizemli D\u00fcnyas\u0131<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JavaScript'te Nesne \u00d6zelliklerini Derinlemesine Anlamak: getOwnPropertyDescriptors Metodu\" \/>\n<meta property=\"og:description\" content=\"JavaScript'te Nesne \u00d6zelliklerini Derinlemesine Anlamak: getOwnPropertyDescriptors Metodu JavaScript, dinamik ve esnek bir programlama dili olup, ne\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-08T03:40:45+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"18 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"JavaScript’te Nesne \u00d6zelliklerini Derinlemesine Anlamak: getOwnPropertyDescriptors Metodu\",\"datePublished\":\"2025-12-08T03:40:45+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu\/\"},\"wordCount\":2394,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"articleSection\":[\"Javascript\"],\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu\/#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/javascriptte-nesne-ozelliklerini-derinlemesine-anlamak-getownpropertydescriptors-metodu\/\",\"name\":\"JavaScript'te Nesne \u00d6zelliklerini Derinlemesine Anlamak: getOwnPropertyDescriptors Metodu - 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