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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
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+---
+title: Math.min()
+slug: Web/JavaScript/Reference/Global_Objects/Math/min
+tags:
+ - JavaScript
+ - Math
+ - Math.min
+ - 参考
+ - 方法
+translation_of: Web/JavaScript/Reference/Global_Objects/Math/min
+---
+<div>{{JSRef}}</div>
+
+<p><code><strong>Math.min()</strong></code> 返回零个或更多个数值的最小值。</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox"><code>Math.min([<em>value1</em>[,<em>value2</em>, ...]]) </code></pre>
+
+<h3 id="Parameters" name="Parameters">参数</h3>
+
+<dl>
+ <dt><code>value1, value2, ...</code></dt>
+ <dd>一组数值</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p>给定数值中最小的数。如果任一参数不能转换为数值,则返回{{jsxref("NaN")}}。</p>
+
+<h2 id="Description" name="Description">描述</h2>
+
+<p>由于 <code>min</code> 是 <code>Math</code> 的静态方法,所以应该像这样使用:<code>Math.min()</code>,而不是作为你创建的 <code>Math</code> 实例的方法(Math 不是构造函数)。</p>
+
+<p>如果没有参数,结果为{{jsxref("Infinity")}}。</p>
+
+<p>如果有任一参数不能被转换为数值,结果为 {{jsxref("NaN")}}。</p>
+
+<h2 id="Examples" name="Examples">示例</h2>
+
+<h3 id="Example:_Using_Math.min" name="Example:_Using_Math.min">使用 <code>Math.min()</code></h3>
+
+<p>下例找出 x 和 y 的最小值,并把它赋值给 z:</p>
+
+<pre class="brush:js">var x = 10, y = -20;
+var z = Math.min(x, y);
+</pre>
+
+<h3 id="Example.3A_Clipping_a_value_with_Math.min" name="Example.3A_Clipping_a_value_with_Math.min">使用 <code>Math.min()</code> 裁剪值(Clipping a value)</h3>
+
+<p><code>Math.min</code> 经常用于裁剪一个值,以便使其总是小于或等于某个边界值。例如:</p>
+
+<pre class="brush: js">var x = f(foo);
+
+if (x &gt; boundary) {
+ x = boundary;
+}</pre>
+
+<p>可以写成:</p>
+
+<pre class="brush:js">var x = Math.min(f(foo), boundary);</pre>
+
+<div>另外,{{jsxref("Math.max()")}} 也可以被用来以相似的方式裁剪一个值。</div>
+
+<div> </div>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">规范版本</th>
+ <th scope="col">规范状态</th>
+ <th scope="col">注解</th>
+ </tr>
+ <tr>
+ <td>ECMAScript 1st Edition. Implemented in JavaScript 1.0</td>
+ <td>{{Spec2('ES1')}}</td>
+ <td>初始定义。在  JavaScript 1.0 中实现。</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES5.1', '#sec-15.8.2.12', 'Math.min')}}</td>
+ <td>{{Spec2('ES5.1')}}</td>
+ <td> </td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES6', '#sec-math.min', 'Math.min')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td> </td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-math.min', 'Math.min')}}</td>
+ <td>{{Spec2('ESDraft')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<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>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</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>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="See_also" name="See_also">相关链接</h2>
+
+<ul>
+ <li>{{jsxref("Math.max()")}}</li>
+</ul>