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+---
+title: Math.sinh()
+slug: Web/JavaScript/Reference/Global_Objects/Math/sinh
+translation_of: Web/JavaScript/Reference/Global_Objects/Math/sinh
+---
+<div>{{JSRef("Global_Objects", "Math")}}</div>
+
+<h2 id="Summary" name="Summary">概述</h2>
+
+<p> <code><strong>Math.sinh()</strong></code> 函数返回一个数字(单位为角度)的双曲正弦值.</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox notranslate">Math.sinh(<em>x</em>)</pre>
+
+<h3 id="Parameters" name="Parameters">参数</h3>
+
+<dl>
+ <dt><code>x</code></dt>
+ <dd>任意数字 (单位为度).</dd>
+</dl>
+
+<h2 id="Description" name="Description">描述</h2>
+
+<p>双曲正弦的图像如下:</p>
+
+<p><img alt="" src="http://upload.wikimedia.org/wikipedia/commons/1/17/Sinh.png" style="height: 300px; width: 300px;"></p>
+
+<h2 id="Examples" name="Examples">示例</h2>
+
+<pre class="brush:js notranslate">Math.sinh(0)      // 0
+Math.sinh(1)      // 1.1752011936438014
+Math.sinh("-1")   // -1.1752011936438014
+Math.sinh("foo")  // NaN
+</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES6', '#sec-math.sinh', 'Math.sinh')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td>Initial defintion</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Polyfill">Polyfill</h2>
+
+<p>该函数可以使用 {{jsxref("Math.exp()")}}<code> 函数来实现</code>:</p>
+
+<pre class="brush: js  language-js notranslate">function sinh(x){
+    return  (Math.exp(x) - Math.exp(-x)) / 2;
+}</pre>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<p>{{ CompatibilityTable() }}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatGeckoDesktop("25")}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Chrome for Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatGeckoMobile("25")}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="See_also" name="See_also">相关链接</h2>
+
+<ul>
+ <li>{{jsxref("Math.acos()")}}</li>
+ <li>{{jsxref("Math.asin()")}}</li>
+ <li>{{jsxref("Math.atan()")}}</li>
+ <li>{{jsxref("Math.atan2()")}}</li>
+ <li>{{jsxref("Math.cos()")}}</li>
+ <li>{{jsxref("Math.tan()")}}</li>
+</ul>