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----
-title: Object.keys()
-slug: Web/JavaScript/Reference/Global_Objects/Object/keys
-translation_of: Web/JavaScript/Reference/Global_Objects/Object/keys
----
-<div>{{JSRef}}</div>
-
-<p><code><strong>Object.keys()</strong></code> Metode mengembalikan array dari objek yang diberikan sendiri enumerable properti, dalam urutan yang sama seperti yang disediakan oleh loop {{jsxref("Statements/for...in", "for...in")}} (perbedaan adalah bahwa sebuah loop for-in enumerates properti dalam mata rantai prototipe juga).</p>
-
-<h2 id="Syntax">Syntax</h2>
-
-<pre class="syntaxbox"><code>Object.keys(<var>obj</var>)</code></pre>
-
-<h3 id="Parameters">Parameters</h3>
-
-<dl>
- <dt><code>obj</code></dt>
- <dd>Objek yang propertinya sendiri enumerable yang harus dikembalikan.</dd>
-</dl>
-
-<h2 id="Description">Description</h2>
-
-<p><code>Object.keys()</code> mengembalikan array yang elemen string yang sesuai dengan properti enumerable yang ditemukan langsung pada objek. Urutan properti adalah sama dengan yang diberikan oleh perulangan / looping melalui properti dari objek secara manual.</p>
-
-<h2 id="Examples">Examples</h2>
-
-<pre class="brush: js">var arr = ['a', 'b', 'c'];
-console.log(Object.keys(arr)); // console: ['0', '1', '2']
-
-// array like object
-var obj = { 0: 'a', 1: 'b', 2: 'c' };
-console.log(Object.keys(obj)); // console: ['0', '1', '2']
-
-// array like object with random key ordering
-var an_obj = { 100: 'a', 2: 'b', 7: 'c' };
-console.log(Object.keys(an_obj)); // console: ['2', '7', '100']
-
-// getFoo is property which isn't enumerable
-var my_obj = Object.create({}, { getFoo: { value: function() { return this.foo; } } });
-my_obj.foo = 1;
-
-console.log(Object.keys(my_obj)); // console: ['foo']
-</pre>
-
-<p>Jika Anda ingin semua properti, bahkan tidak enumerables, lihat {{jsxref("Object.getOwnPropertyNames()")}}.</p>
-
-<h2 id="Notes">Notes</h2>
-
-<p>Dalam ES5, jika argumen untuk metode ini bukan merupakan objek (primitive), maka akan menyebabkan {{jsxref("TypeError")}}. Dalam ES6, argumen tidak-objek akan dipaksa untuk sebuah objek.</p>
-
-<pre class="brush: js">Object.keys("foo");
-// TypeError: "foo" is not an object (ES5 code)
-
-Object.keys("foo");
-// ["0", "1", "2"]                   (ES6 code)
-</pre>
-
-<h2 id="Polyfill">Polyfill</h2>
-
-<p>Untuk menambahkan kompatibel <code>Object.keys</code> dukungan dalam lingkungan yang lebih tua yang tidak native mendukung itu, copy potongan berikut:</p>
-
-<pre class="brush: js">// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
-if (!Object.keys) {
-  Object.keys = (function() {
-    'use strict';
-    var hasOwnProperty = Object.prototype.hasOwnProperty,
-        hasDontEnumBug = !({ toString: null }).propertyIsEnumerable('toString'),
-        dontEnums = [
-          'toString',
-          'toLocaleString',
-          'valueOf',
-          'hasOwnProperty',
-          'isPrototypeOf',
-          'propertyIsEnumerable',
-          'constructor'
-        ],
-        dontEnumsLength = dontEnums.length;
-
-    return function(obj) {
-      if (typeof obj !== 'object' &amp;&amp; (typeof obj !== 'function' || obj === null)) {
-        throw new TypeError('Object.keys called on non-object');
-      }
-
-      var result = [], prop, i;
-
-      for (prop in obj) {
-        if (hasOwnProperty.call(obj, prop)) {
-          result.push(prop);
-        }
-      }
-
-      if (hasDontEnumBug) {
-        for (i = 0; i &lt; dontEnumsLength; i++) {
-          if (hasOwnProperty.call(obj, dontEnums[i])) {
-            result.push(dontEnums[i]);
-          }
-        }
-      }
-      return result;
-    };
-  }());
-}
-</pre>
-
-<p>Harap dicatat bahwa kode di atas termasuk kunci non-enumerable di  IE7 (dan mungkin IE8), ketika lewat di sebuah objek dari berbagai window.</p>
-
-<p>Untuk Browser sederhana Polyfill, lihat <a href="http://tokenposts.blogspot.com.au/2012/04/javascript-objectkeys-browser.html">Javascript - Object.keys Browser Compatibility</a>.</p>
-
-<h2 id="Specifications">Specifications</h2>
-
-<table class="standard-table">
- <tbody>
-  <tr>
-   <th scope="col">Specification</th>
-   <th scope="col">Status</th>
-   <th scope="col">Comment</th>
-  </tr>
-  <tr>
-   <td>{{SpecName('ES5.1', '#sec-15.2.3.14', 'Object.keys')}}</td>
-   <td>{{Spec2('ES5.1')}}</td>
-   <td>Initial definition. Implemented in JavaScript 1.8.5.</td>
-  </tr>
-  <tr>
-   <td>{{SpecName('ES6', '#sec-object.keys', 'Object.keys')}}</td>
-   <td>{{Spec2('ES6')}}</td>
-   <td> </td>
-  </tr>
-  <tr>
-   <td>{{SpecName('ESDraft', '#sec-object.keys', 'Object.keys')}}</td>
-   <td>{{Spec2('ESDraft')}}</td>
-   <td> </td>
-  </tr>
- </tbody>
-</table>
-
-<h2 id="Browser_compatibility">Browser compatibility</h2>
-
-<div>{{CompatibilityTable}}</div>
-
-<div id="compat-desktop">
-<table class="compat-table">
- <tbody>
-  <tr>
-   <th>Feature</th>
-   <th>Chrome</th>
-   <th>Firefox (Gecko)</th>
-   <th>Internet Explorer</th>
-   <th>Opera</th>
-   <th>Safari</th>
-  </tr>
-  <tr>
-   <td>Basic support</td>
-   <td>{{CompatChrome("5")}}</td>
-   <td>{{CompatGeckoDesktop("2.0")}}</td>
-   <td>{{CompatIE("9")}}</td>
-   <td>{{CompatOpera("12")}}</td>
-   <td>{{CompatSafari("5")}}</td>
-  </tr>
- </tbody>
-</table>
-</div>
-
-<div id="compat-mobile">
-<table class="compat-table">
- <tbody>
-  <tr>
-   <th>Feature</th>
-   <th>Android</th>
-   <th>Chrome for Android</th>
-   <th>Firefox Mobile (Gecko)</th>
-   <th>IE Mobile</th>
-   <th>Opera Mobile</th>
-   <th>Safari Mobile</th>
-  </tr>
-  <tr>
-   <td>Basic support</td>
-   <td>{{CompatUnknown}}</td>
-   <td>{{CompatUnknown}}</td>
-   <td>{{CompatUnknown}}</td>
-   <td>{{CompatUnknown}}</td>
-   <td>{{CompatUnknown}}</td>
-   <td>{{CompatUnknown}}</td>
-  </tr>
- </tbody>
-</table>
-</div>
-
-<h2 id="See_also">See also</h2>
-
-<ul>
- <li><a href="/en-US/docs/Enumerability_and_ownership_of_properties">Enumerability and ownership of properties</a></li>
- <li>{{jsxref("Object.prototype.propertyIsEnumerable()")}}</li>
- <li>{{jsxref("Object.create()")}}</li>
- <li>{{jsxref("Object.getOwnPropertyNames()")}}</li>
- <li>{{jsxref("Object.values()")}} {{experimental_inline}}</li>
- <li>{{jsxref("Object.entries()")}} {{experimental_inline}}</li>
-</ul>