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+---
+title: Function.displayName
+slug: Web/JavaScript/Reference/Global_Objects/Function/displayName
+translation_of: Web/JavaScript/Reference/Global_Objects/Function/displayName
+---
+<div>{{JSRef}} {{non-standard_header}}</div>
+
+<p><strong><code>function.displayName</code></strong> 属性获取函数的显示名称</p>
+
+<h2 id="Description_描述">Description 描述</h2>
+
+<p>当一个函数的 <code>displayName</code> 属性被定义，这个函数的 <code>displayName</code> 属性将返回显示名称。</p>
+
+<pre class="brush: js">function doSomething() {}
+
+console.log(doSomething.displayName); // "undefined"
+
+var popup = function(content) { console.log(content); };
+
+popup.displayName = 'Show Popup';
+
+console.log(popup.displayName); // "Show Popup"
+</pre>
+
+<p>可以在函数表达式重定义函数的显示名称{{jsxref("Functions", "function expression", "", 1)}}:</p>
+
+<pre class="brush: js">var object = {
+  someMethod: function() {}
+};
+
+object.someMethod.displayName = 'someMethod';
+
+console.log(object.someMethod.displayName); // logs "someMethod"
+
+try { someMethod } catch(e) { console.log(e); }
+// ReferenceError: someMethod is not defined
+</pre>
+
+<p>可以动态修改函数的显示名称：</p>
+
+<pre class="brush: js">var object = {
+  // anonymous
+  someMethod: function(value) {
+    arguments.callee.displayName = 'someMethod (' + value + ')';
+  }
+};
+
+console.log(object.someMethod.displayName); // "undefined"
+
+object.someMethod('123')
+console.log(object.someMethod.displayName); // "someMethod (123)"
+</pre>
+
+<h2 id="Examples_例子">Examples 例子</h2>
+
+<p>这个显示名称通常在控制台和配置文件中，用它来提醒对它背后的真实函数名 {{jsxref("Function.name", "func.name")}}的引用。例如：</p>
+
+<p>通过如下的举例，显示的名称应该显示像"function My Function()"</p>
+
+<pre class="brush: js">var a = function() {};
+a.displayName = 'My Function';
+
+a; // "function My Function()"</pre>
+
+<h2 id="Specifications_规范">Specifications 规范</h2>
+
+<p>不属于任何规范</p>
+
+<h2 id="Browser_compatibility_浏览器兼容性">Browser compatibility 浏览器兼容性</h2>
+
+<p>如果你愿意贡献数据，请访问<a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a>并同时给我们发送推送请求。</p>
+
+<div>{{CompatibilityTable}}</div>
+
+<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>{{CompatUnknown}}</td>
+   <td>{{CompatGeckoDesktop(13)}}</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>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>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>