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| author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
|---|---|---|
| committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
| commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
| tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/ja/web/api/videotracklist/change_event/index.html | |
| parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
| download | translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.gz translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.bz2 translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.zip | |
initial commit
Diffstat (limited to 'files/ja/web/api/videotracklist/change_event/index.html')
| -rw-r--r-- | files/ja/web/api/videotracklist/change_event/index.html | 95 |
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diff --git a/files/ja/web/api/videotracklist/change_event/index.html b/files/ja/web/api/videotracklist/change_event/index.html new file mode 100644 index 0000000000..a24e5583ce --- /dev/null +++ b/files/ja/web/api/videotracklist/change_event/index.html @@ -0,0 +1,95 @@ +--- +title: 'VideoTrackList: change イベント' +slug: Web/API/VideoTrackList/change_event +tags: + - API + - Change + - Reference + - events +translation_of: Web/API/VideoTrackList/change_event +--- +<div>{{APIRef}}</div> + +<p><span class="seoSummary"><code>change</code> イベントは、動画トラックがアクティブまたは非アクティブになったとき(トラックの <code><a href="/ja/docs/Web/API/VideoTrack/selected">selected</a></code> プロパティを変更したときなど)に発生します。</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("Event")}}</td> + </tr> + <tr> + <th scope="row">イベントハンドラプロパティ</th> + <td><code><a href="/ja/docs/Web/API/VideoTrackList/onchange">onchange</a></code></td> + </tr> + </tbody> +</table> + +<h2 id="Examples" name="Examples">例</h2> + +<p><code>AddEventListener()</code> を使用する場合</p> + +<pre class="brush: js">const videoElement = document.querySelector('video'); +videoElement.videoTracks.addEventListener('change', (event) => { + console.log(`'${event.type}' イベント発生`); +}); + +// `selected` の値を変更すると `change` イベントを引き起こします +const toggleTrackButton = document.querySelector('.toggle-track'); +toggleTrackButton.addEventListener('click', () => { + const track = videoElement.videoTracks[0]; + track.selected = !track.selected; +}); +</pre> + +<p><code>onchange</code> イベントハンドラプロパティを使用する場合</p> + +<pre class="brush: js">const videoElement = document.querySelector('video'); +videoElement.videoTracks.onchange = (event) => { + console.log(`'${event.type}' イベント発生`); +}; + +// `selected` の値を変更すると `change` イベントを引き起こします +const toggleTrackButton = document.querySelector('.toggle-track'); +toggleTrackButton.addEventListener('click', () => { + const track = videoElement.videoTracks[0]; + track.selected = !track.selected; +});</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> + </tr> + <tr> + <td>{{SpecName('HTML WHATWG', 'media.html#event-media-change', 'change')}}</td> + <td>{{Spec2('HTML WHATWG')}}</td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの互換性</h2> + + + +<p>{{Compat("api.VideoTrackList.change_event")}}</p> + +<h2 id="See_also" name="See_also">関連情報</h2> + +<ul> + <li>Related events: <code><a href="/ja/docs/Web/API/VideoTrackList/addtrack_event">addtrack</a></code>, <code><a href="/ja/docs/Web/API/VideoTrackList/removetrack_event">removetrack</a></code></li> + <li><code><a href="/ja/docs/Web/API/AudioTrackList">AudioTrackList</a></code> 対象でのこのイベント: <code><a href="/ja/docs/Web/API/AudioTrackList/change_event">change</a></code></li> + <li><a href="/ja/docs/Web/API/Media_Streams_API">Media Streams API</a></li> + <li><a href="/ja/docs/Web/API/WebRTC_API">WebRTC API</a></li> +</ul> |
