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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
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+---
+title: Performance.clearResourceTimings()
+slug: Web/API/Performance/clearResourceTimings
+translation_of: Web/API/Performance/clearResourceTimings
+---
+<div>{{APIRef("Resource Timing API")}}</div>
+
+<p>The <strong><code>clearResourceTimings()</code></strong> method removes all {{domxref("PerformanceEntry","performance entries")}} with an {{domxref("PerformanceEntry.entryType","entryType")}} of "<code>resource</code>" from the browser's performance data buffer and sets the size of the performance data buffer to zero. To set the size of the browser's performance data buffer, use the {{domxref("Performance.setResourceTimingBufferSize()")}} method.</p>
+
+<p>{{AvailableInWorkers}}</p>
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="syntaxbox"><em>performance</em>.clearResourceTimings();
+</pre>
+
+<h3 id="Arguments">Arguments</h3>
+
+<dl>
+ <dt>void</dt>
+ <dd> </dd>
+</dl>
+
+<h3 id="Return_Value" name="Return_Value">Return value</h3>
+
+<dl>
+ <dt>none</dt>
+ <dd>This method has no return value.</dd>
+</dl>
+
+<h2 id="Example">Example</h2>
+
+<pre class="brush: js">function load_resource() {
+ var image = new Image();
+ image.src = "https://developer.mozilla.org/static/img/opengraph-logo.png";
+}
+function clear_performance_timings() {
+ if (performance === undefined) {
+ log("Browser does not support Web Performance");
+ return;
+ }
+ // Create a resource timing performance entry by loading an image
+ load_resource();
+
+ var supported = typeof performance.clearResourceTimings == "function";
+ if (supported) {
+ console.log("Run: performance.clearResourceTimings()");
+ performance.clearResourceTimings();
+ } else {
+ console.log("performance.clearResourceTimings() NOT supported");
+ return;
+ }
+ // getEntries should now return zero
+ var p = performance.getEntriesByType("resource");
+ if (p.length == 0)
+ console.log("... Performance data buffer cleared");
+ else
+ console.log("... Performance data buffer NOT cleared!");
+}
+</pre>
+
+<h2 id="Specifications">Specifications</h2>
+
+<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('Resource Timing', '#dom-performance-clearresourcetimings', 'clearResourceTimings()')}}</td>
+ <td>{{Spec2('Resource Timing')}}</td>
+ <td>Initial definition.</td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+<div>
+
+
+<p>{{Compat("api.Performance.clearResourceTimings")}}</p>
+</div>