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+---
+title: animation-timing-function
+slug: Web/CSS/animation-timing-function
+tags:
+  - CSS
+  - CSS Animations
+  - CSS Property
+  - Experimental
+  - Reference
+translation_of: Web/CSS/animation-timing-function
+---
+<p>{{CSSRef}}</p>
+
+<h2 id="概述">概述</h2>
+
+<p><a href="/en-US/docs/CSS" title="CSS">CSS</a> <code>animation-timing-function属性定义CSS动画在每一动画周期中执行的节奏。</code>可能值为一或多个 {{cssxref("&lt;timing-function&gt;")}}。</p>
+
+<p>对于关键帧动画来说，timing function作用于一个关键帧周期而非整个动画周期，即从关键帧开始开始，到关键帧结束结束。</p>
+
+<p>定义于一个关键帧区块的缓动函数(animation timing function)应用到改关键帧；另外，若该关键帧没有定义缓动函数，则使用定义于整个动画的缓动函数。</p>
+
+<pre class="brush: css"><code>/* Keyword values */
+animation-timing-function: ease;
+animation-timing-function: ease-in;
+animation-timing-function: ease-out;
+animation-timing-function: ease-in-out;
+animation-timing-function: linear;
+animation-timing-function: step-start;
+animation-timing-function: step-end;</code>
+
+/* Function values */
+animation-timing-function: cubic-bezier(0.1, 0.7, 1.0, 0.1);
+animation-timing-function: steps(4, end);
+animation-timing-function: frames(10);
+
+/* Multiple animations */
+animation-timing-function: ease, step-start, cubic-bezier(0.1, 0.7, 1.0, 0.1);
+
+/* Global values */
+animation-timing-function: inherit;
+animation-timing-function: initial;
+animation-timing-function: unset;</pre>
+
+<p>通常用{{cssxref("animation")}}简写定义整个动画属性更为方便。</p>
+
+<p>{{cssinfo}}</p>
+
+<h2 id="语法">语法</h2>
+
+<h3 id="值">值</h3>
+
+<dl>
+ <dt><code>&lt;timingfunction&gt;</code></dt>
+ <dd>每个 {{cssxref("&lt;timing-function&gt;")}}代表了应用于动画的timing function，定义于{{cssxref("animation-property")}}.</dd>
+</dl>
+
+<h3 id="正式语法">正式语法</h3>
+
+<pre class="syntaxbox">{{csssyntax("animation-timing-function")}}
+</pre>
+
+<h2 id="示例">示例</h2>
+
+<p>参见 <a href="/en-US/docs/CSS/CSS_animations" title="en-US/docs/CSS/CSS_animations">CSS animations</a></p>
+
+<h2 id="Specifications" name="Specifications">规范</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">规范</th>
+   <th scope="col">状态</th>
+   <th scope="col">备注</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName('CSS3 Animations', '#animation-timing-function', 'animation-timing-function')}}</td>
+   <td>{{Spec2('CSS3 Animations')}}</td>
+   <td></td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_Compatibility" name="Browser_Compatibility">浏览器兼容性</h2>
+
+<p>{{Compat("css.properties.animation-timing-function")}}</p>
+
+<h2 id="参见">参见</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web/Guide/CSS/Using_CSS_transitions" title="CSS developer guide about CSS animations">Using CSS animations</a></li>
+ <li>{{domxref("AnimationEvent", "AnimationEvent")}}</li>
+</ul>