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| author | Ryan Johnson <rjohnson@mozilla.com> | 2021-04-29 16:16:42 -0700 |
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| committer | GitHub <noreply@github.com> | 2021-04-29 16:16:42 -0700 |
| commit | 95aca4b4d8fa62815d4bd412fff1a364f842814a (patch) | |
| tree | 5e57661720fe9058d5c7db637e764800b50f9060 /files/id/web/javascript/reference/global_objects/object/keys | |
| parent | ee3b1c87e3c8e72ca130943eed260ad642246581 (diff) | |
| download | translated-content-95aca4b4d8fa62815d4bd412fff1a364f842814a.tar.gz translated-content-95aca4b4d8fa62815d4bd412fff1a364f842814a.tar.bz2 translated-content-95aca4b4d8fa62815d4bd412fff1a364f842814a.zip | |
remove retired locales (#699)
Diffstat (limited to 'files/id/web/javascript/reference/global_objects/object/keys')
| -rw-r--r-- | files/id/web/javascript/reference/global_objects/object/keys/index.html | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/files/id/web/javascript/reference/global_objects/object/keys/index.html b/files/id/web/javascript/reference/global_objects/object/keys/index.html deleted file mode 100644 index cc1c7dc1a9..0000000000 --- a/files/id/web/javascript/reference/global_objects/object/keys/index.html +++ /dev/null @@ -1,197 +0,0 @@ ---- -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' && (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 < 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> |
