---
title: console.log
slug: Web/API/Console/log
translation_of: Web/API/Console/log
---
<p>{{ ApiRef() }}</p>

<h2 id="Summary" name="Summary">概述</h2>

<p>向 Web 控制台输出一条消息。</p>

<h2 id="Syntax" name="Syntax">语法</h2>

<pre class="eval notranslate">console.log(<em>obj1</em> [, <em>obj2</em>, ..., <em>objN]</em>);
console.log(<em>msg</em> [, <em>subst1</em>, ..., <em>substN]</em>);
console.log('String: %s, Int: %d,Float: %f, Object: %o', str, ints, floats, obj)
console.log(`temp的值为: ${temp}`)
</pre>

<h2 id="参数">参数</h2>

<dl>
 <dt><code>obj1</code> ... <code>objN</code></dt>
 <dd>一个用于输出的 JavaScript 对象列表。其中每个对象会以字符串的形式按照顺序依次输出到控制台。</dd>
 <dt><code>msg</code></dt>
 <dd>一个JavaScript字符串，其中包含零个或多个替代字符串。</dd>
 <dt><code>subst1</code> ... <code>substN</code></dt>
 <dd>JavaScript 对象，用来依次替换<code>msg</code>中的替代字符串。你可以在替代字符串中指定对象的输出格式。</dd>
</dl>

<p>查看<a href="/zh-CN/docs/Web/API/Console#Outputting_text_to_the_console" title="zh-cn/DOM/console#Outputting_text_to_the_console">向控制台输出文本</a>来了解更多{{ domxref("console") }}对象的用法。</p>

<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>Edge</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>基本功能</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoDesktop("2.0")}}</td>
   <td>8</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
  <tr>
   <td>替代字符串</td>
   <td>{{CompatVersionUnknown}}<br>
    {{CompatChrome(28)}}<sup>[1]</sup></td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoDesktop("9.0")}}</td>
   <td>10<sup>[2]</sup></td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
  <tr>
   <td>Available in workers</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoDesktop("38.0")}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>基本功能</td>
   <td>{{ CompatUnknown() }}</td>
   <td>{{ CompatGeckoMobile("2.0") }}</td>
   <td>{{ CompatUnknown() }}</td>
   <td>{{ CompatUnknown() }}</td>
   <td>{{ CompatUnknown() }}</td>
  </tr>
  <tr>
   <td>替代字符串</td>
   <td>{{ CompatUnknown() }}</td>
   <td>{{ CompatGeckoMobile("9.0") }}</td>
   <td>{{ CompatUnknown() }}</td>
   <td>{{ CompatUnknown() }}</td>
   <td>{{ CompatUnknown() }}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="Specification" name="Specification">规范</h2>

<p>不属于任何公开的规范</p>

<h2 id="相关链接">相关链接</h2>

<ul>
 <li><a class="external" href="http://www.opera.com/dragonfly/documentation/console/">Opera Dragonfly documentation: Console</a></li>
 <li><a class="external" href="http://msdn.microsoft.com/library/gg589530">MSDN: Using the F12 Tools Console to View Errors and Status</a></li>
 <li><a href="http://nodejs.org/docs/latest/api/console.html#console_console_log_data">NodeJS: Console API</a></li>
</ul>

<p>{{ languages( {"en": "en/DOM/console.log" } ) }}</p>