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+---
+title: 'Document: drag イベント'
+slug: Web/API/Document/drag_event
+tags:
+ - API
+ - DOM
+ - Document
+ - Drag
+ - DragEvent
+ - Event
+ - Reference
+ - Web
+ - drag and drop
+ - イベント
+ - ウェブ
+translation_of: Web/API/Document/drag_event
+---
+<div>{{APIRef}}</div>
+
+<p><code>drag</code> イベントは、要素や選択されたテキストをユーザーがドラッグしている間に、数百ミリ秒ごとに発生します。</p>
+
+<table class="properties">
+ <tbody>
+ <tr>
+ <th scope="row">バブリング</th>
+ <td>あり</td>
+ </tr>
+ <tr>
+ <th scope="row">キャンセル可能</th>
+ <td>はい</td>
+ </tr>
+ <tr>
+ <th scope="row">既定のアクション</th>
+ <td>ドラッグ&ドロップ操作を続ける</td>
+ </tr>
+ <tr>
+ <th scope="row">インターフェイス</th>
+ <td>{{domxref("DragEvent")}}</td>
+ </tr>
+ <tr>
+ <th scope="row">イベントハンドラープロパティ</th>
+ <td>{{domxref("GlobalEventHandlers/ondrag", "ondrag")}}</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Examples" name="Examples">例</h2>
+
+<p>このコードは <a href="http://jsfiddle.net/zfnj5rv4/">JSFiddle デモ</a>または以下で直接ご覧ください。</p>
+
+<h3 id="HTML">HTML</h3>
+
+<pre class="brush: html">&lt;div class="dropzone"&gt;
+ &lt;div id="draggable" draggable="true" ondragstart="event.dataTransfer.setData('text/plain',null)"&gt;
+ This div is draggable
+  &lt;/div&gt;
+&lt;/div&gt;
+&lt;div class="dropzone"&gt;&lt;/div&gt;
+&lt;div class="dropzone"&gt;&lt;/div&gt;
+&lt;div class="dropzone"&gt;&lt;/div&gt;
+</pre>
+
+<h3 id="CSS">CSS</h3>
+
+<pre class="brush: css">#draggable {
+ width: 200px;
+ height: 20px;
+ text-align: center;
+ background: white;
+}
+
+.dropzone {
+ width: 200px;
+ height: 20px;
+ background: blueviolet;
+ margin-bottom: 10px;
+ padding: 10px;
+}
+</pre>
+
+<h3 id="JavaScript">JavaScript</h3>
+
+<pre class="brush: js">var dragged;
+
+/* events fired on the draggable target */
+document.addEventListener("drag", function(event) {
+
+}, false);
+
+document.addEventListener("dragstart", function(event) {
+ // store a ref. on the dragged elem
+ dragged = event.target;
+ // make it half transparent
+ event.target.style.opacity = .5;
+}, false);
+
+document.addEventListener("dragend", function(event) {
+ // reset the transparency
+ event.target.style.opacity = "";
+}, false);
+
+/* events fired on the drop targets */
+document.addEventListener("dragover", function(event) {
+ // prevent default to allow drop
+ event.preventDefault();
+}, false);
+
+document.addEventListener("dragenter", function(event) {
+ // highlight potential drop target when the draggable element enters it
+ if (event.target.className == "dropzone") {
+ event.target.style.background = "purple";
+ }
+
+}, false);
+
+document.addEventListener("dragleave", function(event) {
+ // reset background of potential drop target when the draggable element leaves it
+ if (event.target.className == "dropzone") {
+ event.target.style.background = "";
+ }
+
+}, false);
+
+document.addEventListener("drop", function(event) {
+ // prevent default action (open as link for some elements)
+ event.preventDefault();
+ // move dragged elem to the selected drop target
+ if (event.target.className == "dropzone") {
+ event.target.style.background = "";
+ dragged.parentNode.removeChild( dragged );
+ event.target.appendChild( dragged );
+ }
+}, false);</pre>
+
+<p>{{EmbedLiveSample('Examples', '300', '200', '')}}</p>
+
+<h2 id="Specifications" name="Specifications">仕様書</h2>
+
+<table class="standard-table">
+ <thead>
+ <tr>
+ <th scope="col">仕様書</th>
+ <th scope="col">状態</th>
+ <th scope="col">備考</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>{{SpecName("HTML WHATWG", "interaction.html#dndevents", "drag event")}}</td>
+ <td>{{Spec2("HTML WHATWG")}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの対応</h2>
+
+<div class="hidden">このページの互換性一覧表は構造化データから生成されています。データに協力していただけるのであれば、 <a class="external" href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> をチェックアウトしてプルリクエストを送信してください。</div>
+
+<p>{{Compat("api.Document.drag_event")}}</p>
+
+<h2 id="See_also" name="See_also">関連情報</h2>
+
+<ul>
+ <li>その他のドラッグ&ドロップイベント:
+ <ul>
+ <li>{{domxref("Document/dragstart_event", "dragstart")}}</li>
+ <li>{{domxref("Document/dragend_event", "dragend")}}</li>
+ <li>{{domxref("Document/dragover_event", "dragover")}}</li>
+ <li>{{domxref("Document/dragenter_event", "dragenter")}}</li>
+ <li>{{domxref("Document/dragleave_event", "dragleave")}}</li>
+ <li>{{domxref("Document/dragexit_event", "dragexit")}}</li>
+ <li>{{domxref("Document/drop_event", "drop")}}</li>
+ </ul>
+ </li>
+ <li>他のターゲットにおけるこのイベント:
+ <ul>
+ <li>{{domxref("Window")}}: {{domxref("Window/drag_event", "drag")}} イベント</li>
+ <li>{{domxref("HTMLElement")}}: {{domxref("HTMLElement/drag_event", "drag")}} イベント</li>
+ <li>{{domxref("SVGElement")}}: {{domxref("SVGElement/drag_event", "drag")}} イベント</li>
+ </ul>
+ </li>
+</ul>