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---
title: Array.prototype.unshift()
slug: Web/JavaScript/Reference/Global_Objects/Array/unshift
translation_of: Web/JavaScript/Reference/Global_Objects/Array/unshift
---
<div>{{JSRef}}</div>
<p>Method <code><strong>unshift()</strong></code> menambahkan satu atau lebih elemen ke indek awal array dan mengembalikan jumlah index array yang baru.</p>
<h2 id="Sintaks">Sintaks</h2>
<pre class="syntaxbox"><code><var>arr</var>.unshift([<var>element1</var>[, ...[, <var>elementN</var>]]])</code></pre>
<h3 id="Parameter">Parameter</h3>
<dl>
<dt><code>element<em>N</em></code></dt>
<dd>Elemen yang akan di tambahkan di awal array.</dd>
</dl>
<h3 id="Returns">Returns</h3>
<p>Properti {{jsxref("Array.length", "length")}} baru dari objek teratas dimana method di panggil.</p>
<h2 id="Deskripsi">Deskripsi</h2>
<p>Method <code>unshift</code> menambahkan nilai yang diberikan ke awal objek array.</p>
<p><code>unshift</code> biasanya generic; method ini bisa berupa {{jsxref("Function.call", "called", "", 1)}} atau {{jsxref("Function.apply", "applied", "", 1)}} ke objek menyerupai array. Objek yang tidak memiliki properti <code>length</code> mencerminkan dari serangkaian urutan, properti numerik berbasis zero kemungkinan tidak berperilaku dengan cara yang berarti.</p>
<h2 id="Contoh">Contoh</h2>
<pre class="brush: js">var arr = [1, 2];
arr.unshift(0); // result of call is 3, the new array length
// arr is [0, 1, 2]
arr.unshift(-2, -1); // = 5
// arr is [-2, -1, 0, 1, 2]
arr.unshift([-3]);
// arr is [[-3], -2, -1, 0, 1, 2]
</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('ES3')}}</td>
<td>{{Spec2('ES3')}}</td>
<td>Initial definition. Implemented in JavaScript 1.2.</td>
</tr>
<tr>
<td>{{SpecName('ES5.1', '#sec-15.4.4.13', 'Array.prototype.unshift')}}</td>
<td>{{Spec2('ES5.1')}}</td>
<td> </td>
</tr>
<tr>
<td>{{SpecName('ES6', '#sec-array.prototype.unshift', 'Array.prototype.unshift')}}</td>
<td>{{Spec2('ES6')}}</td>
<td> </td>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-array.prototype.unshift', 'Array.prototype.unshift')}}</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>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("1.0")}}</td>
<td>{{CompatGeckoDesktop("1.7")}}</td>
<td>{{CompatIE("5.5")}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</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>{{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("Array.prototype.push()")}}</li>
<li>{{jsxref("Array.prototype.pop()")}}</li>
<li>{{jsxref("Array.prototype.shift()")}}</li>
</ul>
|
