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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"><div class="dropzone">
<div id="draggable" draggable="true" ondragstart="event.dataTransfer.setData('text/plain',null)">
This div is draggable
</div>
</div>
<div class="dropzone"></div>
<div class="dropzone"></div>
<div class="dropzone"></div>
</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>
<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>
|
