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+---
+title: String.prototype.toLowerCase()
+slug: Web/JavaScript/Reference/Global_Objects/String/toLowerCase
+tags:
+  - JavaScript
+  - Method
+  - Prototype
+  - Reference
+  - String
+translation_of: Web/JavaScript/Reference/Global_Objects/String/toLowerCase
+---
+<div>{{JSRef}}</div>
+
+<p>Method <strong><code>toLowerCase()</code></strong> mengembalikan nilai string yang dipanggil yang telah dikonversi ke lowercase (huruf kecil).</p>
+
+<h2 id="Sintaks">Sintaks</h2>
+
+<pre class="syntaxbox"><code><var>str</var>.toLowerCase()</code></pre>
+
+<h2 id="Deskripsi">Deskripsi</h2>
+
+<p>Method <code>toLowerCase()</code> mengembaikan nilai dari string yang telah dikonversi ke lowercase. <code>toLowerCase()</code> tidak berdampak pada nilai string pada variabel <code>str</code> itu sendiri.</p>
+
+<h2 id="Contoh">Contoh</h2>
+
+<h3 id="Penggunaan_toLowerCase()">Penggunaan <code>toLowerCase()</code></h3>
+
+<pre class="brush: js">console.log('ALPHABET'.toLowerCase()); // 'alphabet'
+</pre>
+
+<h2 id="Spesifikasi">Spesifikasi</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Spesifikasi</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES1')}}</td>
+   <td>{{Spec2('ES1')}}</td>
+   <td>Initial definition. Implemented in JavaScript 1.0.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES5.1', '#sec-15.5.4.16', 'String.prototype.toLowerCase')}}</td>
+   <td>{{Spec2('ES5.1')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES6', '#sec-string.prototype.tolowercase', 'String.prototype.toLowerCase')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-string.prototype.tolowercase', 'String.prototype.toLowerCase')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Kompabilitas_browser">Kompabilitas browser</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Fitur</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Dukungan dasar</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Fitur</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>Dukungan dasar</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="Lihat_juga">Lihat juga</h2>
+
+<ul>
+ <li>{{jsxref("String.prototype.toLocaleLowerCase()")}}</li>
+ <li>{{jsxref("String.prototype.toLocaleUpperCase()")}}</li>
+ <li>{{jsxref("String.prototype.toUpperCase()")}}</li>
+</ul>