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---
title: ServiceWorkerGlobalScope.oninstall
slug: Web/API/ServiceWorkerGlobalScope/oninstall
tags:
- API
- Property
- Reference
- Service Worker
- ServiceWorker
- ServiceWorkerGlobalScope
- oninstall
translation_of: Web/API/ServiceWorkerGlobalScope/oninstall
---
<p><span style="line-height: 19.0909080505371px;">{{SeeCompatTable}}{{APIRef("Service Workers API")}}</span></p>
<p>{{domxref("ServiceWorkerGlobalScope")}} インターフェースの <strong>oninstall</strong> プロパティは、（Service Worker がインストールされたときの）{{Event("install")}} イベントが発生するたびに発火するイベントハンドラーです。これはアクティブ化の前に発生します。</p>
<h2 id="構文">構文</h2>
<pre class="brush: js">ServiceWorkerGlobalScope.oninstall = function(event) { ... };
ServiceWorkerGlobalScope.addEventListener('install', function(event) { ... });</pre>
<h2 id="例">例</h2>
<p>次のスニペットは <a href="/ja/docs/Web/API/ServiceWorker_API/Using_Service_Workers#Install_and_activate.3A_populating_your_cache">Using Service Workers</a> のものです。詳細はそちらをご覧ください。</p>
<pre class="brush: js">this.addEventListener('install', function(event) {
event.waitUntil(
caches.create('v1').then(function(cache) {
return cache.add(
'/sw-test/',
'/sw-test/index.html',
'/sw-test/style.css',
'/sw-test/app.js',
'/sw-test/image-list.js',
'/sw-test/star-wars-logo.jpg',
'/sw-test/gallery/',
'/sw-test/gallery/bountyHunters.jpg',
'/sw-test/gallery/myLittleVader.jpg',
'/sw-test/gallery/snowTroopers.jpg'
);
})
);
});</pre>
<h2 id="仕様">仕様</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">仕様</th>
<th scope="col">ステータス</th>
<th scope="col">コメント</th>
</tr>
<tr>
<td>{{SpecName('Service Workers', '#service-worker-global-scope-event-handlers', 'Event Handlers')}}</td>
<td>{{Spec2('Service Workers')}}</td>
<td>初期定義。</td>
</tr>
</tbody>
</table>
<h2 id="ブラウザー実装状況">ブラウザー実装状況</h2>
<div>{{CompatibilityTable}}</div>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>機能</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari (WebKit)</th>
</tr>
<tr>
<td>基本サポート</td>
<td>{{CompatChrome(40.0)}}</td>
<td>{{ CompatGeckoDesktop("44.0") }}<sup>[1]</sup></td>
<td>{{CompatNo}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatNo}}</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>機能</th>
<th>Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>Firefox OS</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
<th>Chrome for Android</th>
</tr>
<tr>
<td>基本サポート</td>
<td>{{CompatUnknown}}</td>
<td>{{ CompatGeckoMobile("44.0") }}</td>
<td>{{ CompatVersionUnknown }}</td>
<td>{{CompatNo}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatChrome(40.0)}}</td>
</tr>
</tbody>
</table>
</div>
<p>[1] Service worker（と <a href="/ja/docs/Web/API/Push_API">Push</a>）は、<a href="https://www.mozilla.org/en-US/firefox/organizations/">Firefox 45 延長サポート版</a>（ESR）では使用できません。</p>
<h2 id="関連項目">関連項目</h2>
<ul>
<li><a href="https://developer.mozilla.org/ja/docs/Web/API/ServiceWorker_API/Using_Service_Workers">Using Service Workers</a></li>
<li><a class="external external-icon" href="https://github.com/mdn/sw-test">Service workers basic code example</a></li>
<li><a class="external external-icon" href="https://jakearchibald.github.io/isserviceworkerready/">Is ServiceWorker ready?</a></li>
<li>{{jsxref("Promise")}}</li>
<li><a href="https://developer.mozilla.org/ja/docs/Web/Guide/Performance/Using_web_workers">Using web workers</a></li>
</ul>
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