Revision 923521 of Console.log()

<div>{{APIRef("Console API")}}{{Non-standard_header}}</div>

<p>Выводит сообщения ввеб-консоль.</p>

<p>{{AvailableInWorkers}}</p>

<h2 id="Syntax">Синтакс</h2>

<pre class="syntaxbox">
console.log(<em>obj1</em> [, <em>obj2</em>, ..., <em>objN</em>]);
console.log(<em>msg</em> [, <em>subst1</em>, ..., <em>substN</em>]);
</pre>

<h2 id="Parameters">Параметры</h2>

<dl>
 <dt><code>obj1</code> ... <code>objN</code></dt>
 <dd>A list of JavaScript objects to output. The string representations of each of these objects are appended together in the order listed and output.</dd>
 <dt><code>msg</code></dt>
 <dd>A JavaScript string containing zero or more substitution strings.</dd>
 <dt><code>subst1</code> ... <code>substN</code></dt>
 <dd>JavaScript objects with which to replace substitution strings within <code>msg</code>. This gives you additional control over the format of the output.</dd>
</dl>

<p>See <a href="/en-US/docs/DOM/console#Outputting_text_to_the_console">Outputting text to the console</a> in the documentation of {{domxref("console")}} for details.</p>

<h2 id="Specifications">Specifications</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td>{{SpecName("Console API", "#consolelogobject--object-", "console.log()")}}</td>
   <td>{{Spec2("Console API")}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</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>{{CompatGeckoDesktop("2.0")}}</td>
   <td>8</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
  <tr>
   <td>Substitution strings</td>
   <td>{{CompatVersionUnknown}}<br />
    {{CompatChrome(28)}}<sup>[1]</sup></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>{{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>Basic support</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatGeckoMobile("2.0")}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
  <tr>
   <td>Substitution strings</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatGeckoMobile("9.0")}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
  <tr>
   <td>Available in workers</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatGeckoMobile("38.0")}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<p>[1] If a negative value is passed to <code>%d</code>, it will be rounded down to the closest negative integer, so -0.1 becomes -1.</p>

<p>[2] <code>%c</code> is not supported, <code>%d</code> will render as 0 when it is not a number.</p>

<h2 id="See_also">See also</h2>

<ul>
 <li><a class="external" href="https://www.opera.com/dragonfly/documentation/console/">Opera Dragonfly documentation: Console</a></li>
 <li><a class="external" href="https://msdn.microsoft.com/library/gg589530">MSDN: Using the F12 Tools Console to View Errors and Status</a></li>
 <li><a href="https://getfirebug.com/wiki/index.php/Console_API">Firebug wiki: Console API</a> - Firebug supports additional features in its console.log() implementation, such as <a href="https://www.softwareishard.com/blog/firebug/firebug-tip-styled-logging/">styled logging</a>.</li>
 <li><a href="https://nodejs.org/docs/latest/api/console.html#console_console_log_data">NodeJS: Console API</a></li>
</ul>