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

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
clearResourceTimings
46
22-57
12
35
10
Yes
11
46
≤37-57
46
25-57
35
Yes
11
5.0
1.5-7.0

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Performance/clearResourceTimings