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+---
+title: Console.countReset()
+slug: Web/API/Console/countReset
+translation_of: Web/API/Console/countReset
+---
+<div>{{APIRef("Console API")}}</div>
+
+<p>重置计数器。此函数有一个可选参数 <code>label</code>。</p>
+
+<p>{{AvailableInWorkers}}</p>
+
+<p>如果提供了参数<code>label</code>，此函数会重置与label关联的计数。</p>
+
+<p>如果省略了参数<code>label</code>，此函数会重置默认的计数器。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">console.countReset([label]);
+</pre>
+
+<h3 id="参数">参数</h3>
+
+<dl>
+ <dt><code>label</code></dt>
+ <dd>一个字符串， 若传入此参数 <code>countReset() </code>重置此label的count为0。</dd>
+ <dd>若忽略此参数  <code>countReset()</code> 重置count()默认的 default 字段的count为0<br>
+  </dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p>若传入label参数:</p>
+
+<pre> <span class="message-body-wrapper"><span class="message-flex-body"><span class="devtools-monospace message-body">counter-name: 0</span></span></span></pre>
+
+<p>若不传入label参数:</p>
+
+<pre><span class="message-body-wrapper"><span class="message-flex-body"><span class="devtools-monospace message-body">default: 0</span></span></span></pre>
+
+<h3 id="异常情况">异常情况</h3>
+
+<p>若传入一个不存在的 <font face="consolas, Liberation Mono, courier, monospace"><span style="background-color: rgba(220, 220, 220, 0.5);"><code>label</code></span></font>, <span class="message-body-wrapper"><span class="message-flex-body"><span class="devtools-monospace message-body"><code>countReset</code> 返回下面的警告信息:</span></span></span></p>
+
+<pre><span class="message-body-wrapper"><span class="message-flex-body"><span class="devtools-monospace message-body"><code>Counter "counter-name" doesn’t exist.</code></span></span></span></pre>
+
+<p>若 <code>label</code> 没有被传入 并且 <code>count()</code> 也没有被调用过, <code>countReset</code> 返回下面的警告信息:</p>
+
+<pre><span class="message-body-wrapper"><span class="message-flex-body"><span class="devtools-monospace message-body"><code>Counter "default" doesn’t exist.</code></span></span></span></pre>
+
+<h2 id="示例">示例</h2>
+
+<p>下面给出示例代码:</p>
+
+<pre class="brush: js">var user = "";
+
+function greet() {
+  console.count();
+  return "hi " + user;
+}
+
+user = "bob";
+greet();
+user = "alice";
+greet();
+greet();
+console.count();
+console.countReset();</pre>
+
+<p>控制台打印输出结果:</p>
+
+<pre class="eval">"default: 1"
+"default: 2"
+"default: 3"
+"default: 1"
+"default: 0"
+</pre>
+
+<p>Note that the call to console.counterReset() resets the value of the default counter to zero.</p>
+
+<p>可以看到 调用 <code>console.counterReset()</code> 重置了<code>default</code> 的计数为0</p>
+
+<p>如果我们把 <code>user</code> 变量做为 <code>label</code> 传入第一次调用的 <code>count() </code> 把字符串 <code>'alice' </code>作为第二次调用<code>count()</code> 的参数</p>
+
+<pre class="brush: js">var user = "";
+
+function greet() {
+  console.count(user);
+  return "hi " + user;
+}
+
+user = "bob";
+greet();
+user = "alice";
+greet();
+greet();
+console.countReset("bob");
+console.count("alice");</pre>
+
+<p>我们看到的输出如下:</p>
+
+<pre class="eval">"bob: 1"
+"alice: 1"
+"alice: 2"
+"bob: 0"
+"alice: 3"</pre>
+
+<p>调用countReset("bod")只是重置了 "bob" 的计数器值  而 "alice" 的计数器值没有改变。</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", "#count", "console.countReset()")}}</td>
+   <td>{{Spec2("Console API")}}</td>
+   <td>Initial definition</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("api.Console.countReset")}}</p>