Performance.clearResourceTimings()

The clearResourceTimings() method removes all performance entries with an entryType of "resource" 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 Performance.setResourceTimingBufferSize() method.

Syntax

performance.clearResourceTimings();

Arguments

void
 

Return value

none
This method has no return value.

Example

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!");
}

Specifications

Specification Status Comment
Resource Timing
The definition of 'clearResourceTimings()' in that specification.
Editor's Draft Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support. (Yes)

-webkit
46 (unprefixed)
57 (prefixed version removed)

(Yes) (Yes) (Yes) (Yes) No support
Feature Android Webview Chrome for Android Edge Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support (Yes)

-webkit
46 (unprefixed)
57 (prefixed version removed)

(Yes)

-webkit
46 (unprefixed)
57 (prefixed version removed)

(Yes) (Yes) (Yes) (Yes) (Yes) No support

Document Tags and Contributors

 Contributors to this page: jpmedley, abbycar, rolfedh, AFBarstow
 Last updated by: jpmedley,