---
title: Performance.getEntries()
slug: Web/API/Performance/getEntries
translation_of: Web/API/Performance/getEntries
---
<div>{{APIRef("Performance Timeline API")}}</div>

<p><strong><code>getEntries()</code></strong> 对于给定的filter,此方法返回 {{domxref("PerformanceEntry")}} 对象数组. 数组成员（入口）可以在显式的时间点用 performance <em>marks或</em><em>measures</em> 来创建(例如调用{{domxref("Performance.mark","mark()")}} 方法) .</p>

<p class="note">此方法暴露给{{domxref("Window")}} 和 {{domxref("Worker")}}接口.</p>

<h2 id="语法">语法</h2>

<p>取全部:</p>

<pre class="syntaxbox"><em>entries</em> = window.performance.getEntries();
<em>entries</em> = window.performance.getEntries(<em>PerformanceEntryFilterOptions</em>);
</pre>

<p>取特定:</p>

<pre class="syntaxbox">entries = performance.getEntries({name: "entry_name", entryType: "mark"});
</pre>

<h3 id="参数">参数</h3>

<dl>
 <dt>PerformanceEntryFilterOptions {{optional_inline}}</dt>
</dl>

<dl>
 <dd><code>PerformanceEntryFilterOptions</code> 是一个带有以下键值的字典:

 <ul>
  <li><code>"name"</code>,  performance entry. 的名字</li>
  <li><code>"entryType"</code>, entry 类型. 合法的entry类型可以从{{domxref("PerformanceEntry.entryType")}} 方法获取.</li>
  <li><code>"initiatorType"</code>, 初始化资源的类型(例如一个HTML element). 其取值被 {{domxref("PerformanceResourceTiming.initiatorType")}} 接口所定义.</li>
 </ul>
 </dd>
</dl>

<h3 id="Return_Value" name="Return_Value">返回值</h3>

<dl>
 <dt>entries</dt>
 <dd>一个由符合filter条件的{{domxref("PerformanceEntry")}} 对象构成的数组 . 数组成员按PerformanceEntry.{{domxref("PerformanceEntry.startTime","startTime")}}时间顺序排列 . 如果没有符合filter条件的对象，那么返回空数组. 如果不带任何参数，返回全部entries.</dd>
</dl>

<h2 id="Example">Example</h2>

<pre class="brush: js">function use_PerformanceEntry_methods() {
  log("PerformanceEntry tests ...");

  if (performance.mark === undefined) {
    log("... performance.mark Not supported");
    return;
  }

  // Create some performance entries via the mark() method
  performance.mark("Begin");
  do_work(50000);
  performance.mark("End");
  performance.mark("Begin");
  do_work(100000);
  performance.mark("End");
  do_work(200000);
  performance.mark("End");

  // Use getEntries() to iterate through the each entry
  var p = performance.getEntries();
  for (var i=0; i &lt; p.length; i++) {
    log("Entry[" + i + "]");
    check_PerformanceEntry(p[i]);
  }

  // Use getEntries(name, entryType) to get specific entries
  p = performance.getEntries({name : "Begin", entryType: "mark"});
  for (var i=0; i &lt; p.length; i++) {
    log("Begin[" + i + "]");
    check_PerformanceEntry(p[i]);
  }

  // Use getEntriesByType() to get all "mark" entries
  p = performance.getEntriesByType("mark");
  for (var i=0; i &lt; p.length; i++) {
    log ("Mark only entry[" + i + "]: name = " + p[i].name +
         "; startTime = " + p[i].startTime +
         "; duration  = " + p[i].duration);
  }

  // Use getEntriesByName() to get all "mark" entries named "Begin"
  p = performance.getEntriesByName("Begin", "mark");
  for (var i=0; i &lt; p.length; i++) {
    log ("Mark and Begin entry[" + i + "]: name = " + p[i].name +
         "; startTime = " + p[i].startTime +
         "; duration  = " + p[i].duration);
  }
}

//entryType,name,initiatorType  Examples
var p = performance.getEntries();

var ptyps = p.map((ele) =&gt; {return(ele.entryType)});
//Array(94) [ "navigation", "resource", "resource", "resource", "resource", "resource", "resource", "resource", "resource", "resource", … ]

var pnms = p.map((ele) =&gt; {return(ele.name)});
//Array(94) [ "document", "https://csdnimg.cn/public/static/css/avatar.css", "https://csdnimg.cn/public/common/libs/jquery/jquery-1.9.1.min.js", "https://csdnimg.cn/rabbit/exposure-click/main-1.0.5.js", "https://csdnimg.cn/release/phoenix/production/main-e96db8abdf.js", "https://csdnimg.cn/pubfooter/js/tracking-1.0.2.js", "https://csdnimg.cn/public/common/toolbar/js/content_toolbar.js", "https://csdnimg.cn/release/phoenix/production/markdown_views-ea0013b516.css", "https://csdnimg.cn/search/baidu_search-1.1.2.js?v=201802071056&amp;autorun=true&amp;install=true&amp;keyword=%E5%B0%8F%E7%A8%8B%E5%BA%8F%E6%89%A7%E8%A1%8C%E9%A1%BA%E5%BA%8F", "https://csdnimg.cn/release/phoenix/production/main-f869aa95a4.css", … ]

var pityps = p.map((ele) =&gt; {return(ele.initiatorType)});
//Array(94) [ "navigation", "link", "script", "script", "script", "script", "script", "link", "script", "link", … ]

Specifications</pre>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{SpecName('Performance Timeline Level 2', '#dom-performance-getentries', 'getEntries()')}}</td>
   <td>{{Spec2('Performance Timeline Level 2')}}</td>
   <td><code>getEntries()</code> method has an optional argument.</td>
  </tr>
  <tr>
   <td>{{SpecName('Performance Timeline', '#dom-performance-getentries', 'getEntries()')}}</td>
   <td>{{Spec2('Performance Timeline')}}</td>
   <td>Initial definition.</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<div>
<div>


<p>{{Compat("api.Performance.getEntries")}}</p>
</div>
</div>