From 5c799c31c2746db780a6330be5ce714c8f676f4f Mon Sep 17 00:00:00 2001
From: Masahiro FUJIMOTO <mfujimot@gmail.com>
Date: Thu, 30 Dec 2021 23:18:47 +0900
Subject: CSS Transitions のプロパティを変換準備
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+---
+title: transition-duration
+slug: Web/CSS/transition-duration
+tags:
+  - CSS
+  - CSS Property
+  - CSS Transitions
+  - Reference
+  - 'recipe:css-property'
+translation_of: Web/CSS/transition-duration
+---
+<div>{{CSSRef}}</div>
+
+<p><strong><code>transition-duration</code></strong> は <a href="/ja/docs/Web/CSS">CSS</a> のプロパティで、トランジションによるアニメーションが完了するまでの所要時間を秒数またはミリ秒数で指定します。既定値は <code>0s</code> であり、これはアニメーションを実行しないことを示します。</p>
+
+<div>{{EmbedInteractiveExample("pages/css/transition-duration.html")}}</div>
+
+<div class="hidden">このデモのソースファイルは GitHub リポジトリに格納されています。デモプロジェクトに協力したい場合は、 <a href="https://github.com/mdn/interactive-examples">https://github.com/mdn/interactive-examples</a> をクローンしてプルリクエストを送信してください。</div>
+
+<p>このプロパティには複数の所要時間を指定することができます。それぞれの時間は、マスターリストを務める {{ cssxref("transition-property") }} プロパティの指定値で対応するプロパティに適用されます。指定した所要時間の数がマスターリストで指定したプロパティの数より少ない場合は、不足している値は初期値 (<code>0s</code>) になります。また所要時間の数が多い場合は、リストを適切な長さに切り詰めます。どちらの場合も、CSS の宣言として妥当です。</p>
+
+<h2 id="Syntax" name="Syntax">構文</h2>
+
+<pre class="brush:css no-line-numbers notranslate">/* &lt;time&gt; 値 */
+transition-duration: 6s;
+transition-duration: 120ms;
+transition-duration: 1s, 15s;
+transition-duration: 10s, 30s, 230ms;
+
+/* グローバル値 */
+transition-duration: inherit;
+transition-duration: initial;
+transition-duration: unset;
+</pre>
+
+<h3 id="Values" name="Values">値</h3>
+
+<dl>
+ <dt><code>&lt;time&gt;</code></dt>
+ <dd>プロパティの古い値から新しい値へ遷移するのにかかる時間を表す {{cssxref("&lt;time&gt;")}} 形式の値です。<code>0s</code> の時間は、遷移が起こらないこと、すなわち、2 つの状態間の切り替えが瞬間的であることを示します。負の値を指定すると、宣言は無効になります。</dd>
+</dl>
+
+<h2 id="Formal_definition" name="Formal_definition">公式定義</h2>
+
+<p>{{CSSInfo}}</p>
+
+<h2 id="Formal_syntax" name="Formal_syntax">形式文法</h2>
+
+{{csssyntax}}
+
+<h2 id="Examples" name="Examples">例</h2>
+
+<div>
+<div id="duration_0_5s" style="width: 251px; display: inline-block; margin-right: 1px; margin-bottom: 1px;">
+<p><code>transition-duration: 0.5s</code></p>
+
+<div class="hidden">
+<pre class="brush:html notranslate"> &lt;div class="parent"&gt;
+  &lt;div class="box"&gt;Lorem&lt;/div&gt;
+&lt;/div&gt;
+  </pre>
+
+<pre class="brush:css; notranslate">.parent { width: 250px; height:125px;}
+.box {
+    width: 100px;
+    height: 100px;
+    background-color: red;
+    font-size: 20px;
+    left: 0px;
+    top: 0px;
+    position:absolute;
+    -webkit-transition-property: width height background-color font-size left top transform -webkit-transform color;
+    -webkit-transition-duration:0.5s;
+    -webkit-transition-timing-function: ease-in-out;
+    transition-property: width height background-color font-size left top transform -webkit-transform color;
+    transition-duration:0.5s;
+    transition-timing-function: ease-in-out;
+}
+.box1{
+    transform: rotate(270deg);
+    -webkit-transform: rotate(270deg);
+    width: 50px;
+    height: 50px;
+    background-color: blue;
+    color: yellow;
+    font-size: 18px;
+    left: 150px;
+    top:25px;
+    position:absolute;
+    -webkit-transition-property: width height background-color font-size left top transform -webkit-transform color;
+    -webkit-transition-duration:0.5s;
+    -webkit-transition-timing-function: ease-in-out;
+    transition-property: width height background-color font-size left top transform -webkit-transformv color;
+    transition-duration:0.5s;
+    transition-timing-function: ease-in-out;
+}
+</pre>
+
+<pre class="brush:js notranslate">function updateTransition() {
+  var el = document.querySelector("div.box");
+
+  if (el) {
+    el.className = "box1";
+  } else {
+    el = document.querySelector("div.box1");
+    el.className = "box";
+  }
+
+  return el;
+}
+
+var intervalID = window.setInterval(updateTransition, 7000);
+</pre>
+</div>
+
+<div>{{EmbedLiveSample("duration_0_5s",275,150)}}</div>
+</div>
+
+<div id="duration_1s" style="width: 251px; display: inline-block; margin-right: 1px; margin-bottom: 1px;">
+<p><code>transition-duration: 1s</code></p>
+
+<div class="hidden">
+<pre class="brush:html notranslate"> &lt;div class="parent"&gt;
+  &lt;div class="box"&gt;Lorem&lt;/div&gt;
+&lt;/div&gt;
+  </pre>
+
+<pre class="brush:css; notranslate">.parent { width: 250px; height:125px;}
+.box {
+    width: 100px;
+    height: 100px;
+    background-color: red;
+    font-size: 20px;
+    left: 0px;
+    top: 0px;
+    position:absolute;
+    -webkit-transition-property: width height background-color font-size left top -webkit-transform color;
+    -webkit-transition-duration:1s;
+    -webkit-transition-timing-function: ease-in-out;
+    transition-property: width height background-color font-size left top transform color;
+    transition-duration:1s;
+    transition-timing-function: ease-in-out;
+}
+.box1{
+    transform: rotate(270deg);
+    -webkit-transform: rotate(270deg);
+    width: 50px;
+    height: 50px;
+    background-color: blue;
+    color: yellow;
+    font-size: 18px;
+    left: 150px;
+    top:25px;
+    position:absolute;
+    -webkit-transition-property: width height background-color font-size left top -webkit-transform transform color;
+    -webkit-transition-duration:1s;
+    -webkit-transition-timing-function: ease-in-out;
+    transition-property: width height background-color font-size left top transform -webkit-transform color;
+    transition-duration:1s;
+    transition-timing-function: ease-in-out;
+}
+</pre>
+
+<pre class="brush:js notranslate">function updateTransition() {
+  var el = document.querySelector("div.box");
+
+  if (el) {
+    el.className = "box1";
+  } else {
+    el = document.querySelector("div.box1");
+    el.className = "box";
+  }
+
+  return el;
+}
+
+var intervalID = window.setInterval(updateTransition, 7000);
+</pre>
+</div>
+
+<div>{{EmbedLiveSample("duration_1s",275,150)}}</div>
+</div>
+
+<div id="duration_2s" style="width: 251px; display: inline-block; margin-right: 1px; margin-bottom: 1px;">
+<p><code>transition-duration: 2s</code></p>
+
+<div class="hidden">
+<pre class="brush:html notranslate"> &lt;div class="parent"&gt;
+  &lt;div class="box"&gt;Lorem&lt;/div&gt;
+&lt;/div&gt;
+  </pre>
+
+<pre class="brush:css; notranslate">.parent { width: 250px; height:125px;}
+.box {
+    width: 100px;
+    height: 100px;
+    background-color: red;
+    font-size: 20px;
+    left: 0px;
+    top: 0px;
+    position:absolute;
+    -webkit-transition-property: width height background-color font-size left top transform -webkit-transform color;
+    -webkit-transition-duration:2s;
+    -webkit-transition-timing-function: ease-in-out;
+    transition-property: width height background-color font-size left top transform -webkit-transform color;
+    transition-duration:2s;
+    transition-timing-function: ease-in-out;
+}
+.box1{
+    transform: rotate(270deg);
+    -webkit-transform: rotate(270deg);
+    width: 50px;
+    height: 50px;
+    background-color: blue;
+    color: yellow;
+    font-size: 18px;
+    left: 150px;
+    top:25px;
+    position:absolute;
+    -webkit-transition-property: width height background-color font-size left top transform -webkit-transform color;
+    -webkit-transition-duration:2s;
+    -webkit-transition-timing-function: ease-in-out;
+    transition-property: width height background-color font-size left top transform -webkit-transform color;
+    transition-duration:2s;
+    transition-timing-function: ease-in-out;
+}
+</pre>
+
+<pre class="brush:js notranslate">function updateTransition() {
+  var el = document.querySelector("div.box");
+
+  if (el) {
+    el.className = "box1";
+  } else {
+    el = document.querySelector("div.box1");
+    el.className = "box";
+  }
+
+  return el;
+}
+
+var intervalID = window.setInterval(updateTransition, 7000);
+</pre>
+</div>
+
+<div>{{EmbedLiveSample("duration_2s",275,150)}}</div>
+</div>
+
+<div id="duration_4s" style="width: 251px; display: inline-block; margin-right: 1px; margin-bottom: 1px;">
+<p><code>transition-duration: 4s</code></p>
+
+<div class="hidden">
+<pre class="brush:html notranslate"> &lt;div class="parent"&gt;
+  &lt;div class="box"&gt;Lorem&lt;/div&gt;
+&lt;/div&gt;
+  </pre>
+
+<pre class="brush:css; notranslate">.parent { width: 250px; height:125px;}
+.box {
+    width: 100px;
+    height: 100px;
+    background-color: red;
+    font-size: 20px;
+    left: 0px;
+    top: 0px;
+    position:absolute;
+    -webkit-transition-property: width height background-color font-size left top transform -webkit-transform color;
+    -webkit-transition-duration:4s;
+    -webkit-transition-timing-function: ease-in-out;
+    transition-property: width height background-color font-size left top transform -webkit-transform color;
+    transition-duration:4s;
+    transition-timing-function: ease-in-out;
+}
+.box1{
+    transform: rotate(270deg);
+    -webkit-transform: rotate(270deg);
+    width: 50px;
+    height: 50px;
+    background-color: blue;
+    color: yellow;
+    font-size: 18px;
+    left: 150px;
+    top:25px;
+    position:absolute;
+    -webkit-transition-property: width height background-color font-size left top transform -webkit-transform color;
+    -webkit-transition-duration:4s;
+    -webkit-transition-timing-function: ease-in-out;
+    transition-property: width height background-color font-size left top transform -webkit-transform color;
+    transition-duration:4s;
+    transition-timing-function: ease-in-out;
+}
+</pre>
+
+<pre class="brush:js notranslate">function updateTransition() {
+  var el = document.querySelector("div.box");
+
+  if (el) {
+    el.className = "box1";
+  } else {
+    el = document.querySelector("div.box1");
+    el.className = "box";
+  }
+
+  return el;
+}
+
+var intervalID = window.setInterval(updateTransition, 7000);
+</pre>
+</div>
+
+<div>{{EmbedLiveSample("duration_4s",275,150)}}</div>
+</div>
+</div>
+
+<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('CSS3 Transitions', '#transition-duration-property', 'transition-duration') }}</td>
+   <td>{{ Spec2('CSS3 Transitions') }}</td>
+   <td>初回定義</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの互換性</h2>
+
+<p>{{Compat("css.properties.transition-duration")}}</p>
+
+<h2 id="See_also" name="See_also">関連情報</h2>
+
+<ul>
+ <li><a href="/ja/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions">CSS トランジションの使用</a></li>
+ <li>{{cssxref('transition')}}</li>
+ <li>{{cssxref('transition-property')}}</li>
+ <li>{{cssxref('transition-timing-function')}}</li>
+ <li>{{cssxref('transition-delay')}}</li>
+ <li>{{domxref("TransitionEvent")}}</li>
+</ul>
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