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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/ja/web/api/serviceworkerglobalscope/activate_event | |
parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
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diff --git a/files/ja/web/api/serviceworkerglobalscope/activate_event/index.html b/files/ja/web/api/serviceworkerglobalscope/activate_event/index.html new file mode 100644 index 0000000000..da64121d50 --- /dev/null +++ b/files/ja/web/api/serviceworkerglobalscope/activate_event/index.html @@ -0,0 +1,89 @@ +--- +title: 'ServiceWorkerGlobalScope: activate イベント' +slug: Web/API/ServiceWorkerGlobalScope/activate_event +tags: + - API + - Reference + - Service Workers + - ServiceWorkerGlobalScope + - activate + - events +translation_of: Web/API/ServiceWorkerGlobalScope/activate_event +--- +<p>{{DefaultAPISidebar("Service Workers API")}}</p> + +<p><span class="seoSummary">{{domxref("ServiceWorkerGlobalScope")}} インターフェイスの <strong><code>activate</code></strong> イベントは、{{domxref("ServiceWorkerRegistration")}} が新しいアクティブワーカー({{domxref("ServiceWorkerRegistration.active")}} worker)を取得すると発生します。</span></p> + +<table class="properties"> + <tbody> + <tr> + <th scope="row">バブリング</th> + <td>なし</td> + </tr> + <tr> + <th scope="row">キャンセル</th> + <td>不可</td> + </tr> + <tr> + <th scope="row">インターフェイス</th> + <td>{{domxref("ExtendableEvent")}}</td> + </tr> + <tr> + <th scope="row">イベントハンドラープロパティ</th> + <td>{{domxref("ServiceWorkerGlobalScope.onactivate")}}</td> + </tr> + </tbody> +</table> + +<h2 id="Examples" name="Examples">例</h2> + +<p>次のスニペットは、<code>activate</code> イベントハンドラーを使用してキャッシュをアップグレードする方法を示しています。</p> + +<pre class="brush: js">globalScope.addEventListener('activate', function(event) { + var cacheWhitelist = ['v2']; + + event.waitUntil( + caches.forEach(function(cache, cacheName) { + if (cacheWhitelist.indexOf(cacheName) == -1) { + return caches.delete(cacheName); + } + }) + ); +});</pre> + +<p>次のように {{domxref("ServiceWorkerGlobalScope.onactivate")}} プロパティを使用してイベントハンドラーを設定することもできます。</p> + +<pre class="brush: js">globalScope.onactivate = function(event) { + ... +};</pre> + +<h2 id="Specifications" name="Specifications">仕様</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">仕様</th> + <th scope="col">状態</th> + <th scope="col">コメント</th> + </tr> + <tr> + <td>{{SpecName('Service Workers', '#service-worker-global-scope-activate-event', 'activate')}}</td> + <td>{{Spec2('Service Workers')}}</td> + <td></td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの互換性</h2> + + + +<p>{{Compat("api.ServiceWorkerGlobalScope.activate_event")}}</p> + +<h2 id="See_also" name="See_also">関連情報</h2> + +<ul> + <li><code><a href="/ja/docs/Web/API/ServiceWorkerGlobalScope/install">install</a></code> イベント</li> + <li>{{domxref("ServiceWorkerGlobalScope")}}</li> + <li><a href="/ja/docs/Web/API/Service_Worker_API">Service Worker API</a></li> +</ul> |