From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: 'IDBRequest: success event'
+slug: Web/API/IDBRequest/success_event
+translation_of: Web/API/IDBRequest/success_event
+---
+<div>{{ APIRef("IndexedDB") }}</div>
+
+<p><code>success</code>イベントは<code>IDBRequest</code>が成功すると着火します。</p>
+
+<table class="properties">
+ <tbody>
+  <tr>
+   <th scope="row">Bubbles</th>
+   <td>No</td>
+  </tr>
+  <tr>
+   <th scope="row">Cancelable</th>
+   <td>No</td>
+  </tr>
+  <tr>
+   <th scope="row">Interface</th>
+   <td>{{domxref("Event")}}</td>
+  </tr>
+  <tr>
+   <th scope="row">Event handler property</th>
+   <td><code><a href="/en-US/docs/Web/API/IDBRequest/onsuccess">onsuccess</a></code></td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="例">例</h2>
+
+<p>この例では、データベースをオープンします。その<code>success</code>イベントを<code>addEventListener()</code>でリスンします。</p>
+
+<pre class="brush: js">// データベースをオープンする
+const openRequest = window.indexedDB.open('toDoList', 4);
+
+openRequest.onupgradeneeded = (event) =&gt; {
+  const db = event.target.result;
+
+  db.onerror = () =&gt; {
+    console.log('Error creating database');
+  };
+
+  // オブジェクトストアを作成する
+  var objectStore = db.createObjectStore('toDoList', { keyPath: 'taskTitle' });
+
+  // オブジェクトストアが保有するデータを定義する
+  objectStore.createIndex('hours', 'hours', { unique: false });
+  objectStore.createIndex('minutes', 'minutes', { unique: false });
+  objectStore.createIndex('day', 'day', { unique: false });
+  objectStore.createIndex('month', 'month', { unique: false });
+  objectStore.createIndex('year', 'year', { unique: false });
+};
+
+openRequest.addEventListener('success', (event) =&gt; {
+  console.log('Database opened successfully!');
+});
+
+</pre>
+
+<p>下記は同じことを<code>onsuccess</code>イベントハンドラープロパティを使用した例です。</p>
+
+<pre class="brush: js">// データベースをオープンする
+const openRequest = window.indexedDB.open('toDoList', 4);
+
+openRequest.onupgradeneeded = (event) =&gt; {
+  const db = event.target.result;
+
+  db.onerror = () =&gt; {
+    console.log('Error creating database');
+  };
+
+  // オブジェクトストアを作成する
+  var objectStore = db.createObjectStore('toDoList', { keyPath: 'taskTitle' });
+
+  // オブジェクトストアが保有するデータを定義する
+  objectStore.createIndex('hours', 'hours', { unique: false });
+  objectStore.createIndex('minutes', 'minutes', { unique: false });
+  objectStore.createIndex('day', 'day', { unique: false });
+  objectStore.createIndex('month', 'month', { unique: false });
+  objectStore.createIndex('year', 'year', { unique: false });
+};
+
+openRequest.onsuccess = (event) =&gt; {
+  console.log('Database opened successfully!');
+};
+</pre>
+
+<h2 id="ブラウザの対応">ブラウザの対応</h2>
+
+
+
+<p>{{Compat("api.IDBRequest.success_event")}}</p>
+
+<h2 id="関連情報">関連情報</h2>
+
+<ul>
+ <li><a href="/ja/docs/IndexedDB/Using_IndexedDB">Using IndexedDB</a></li>
+ <li><code><a href="/ja/docs/Web/API/IDBRequest/onsuccess">onsuccess</a></code> event handler property</li>
+</ul>
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