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.

Note: This feature is available in Web Workers.

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 Level 1
The definition of 'clearResourceTimings()' in that specification.
Candidate Recommendation Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support

46

Yes — 57 webkit

Yes Yes Yes Yes No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support

46

Yes — 57 webkit

46

Yes — 57 webkit

Yes Yes Yes No ?

Document Tags and Contributors

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