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Performance.clearMarks

The clearMarks() method removes the named mark from the browser's performance entry buffer. If the method is called with no arguments, all performance entries with an entry type of "mark" will be removed from the performance entry buffer.

Note: This feature is available in Web Workers.

Syntax

performance.clearMarks();
performance.clearMarks(name);

Arguments

name Optional
A DOMString representing the name of the timestamp. If this argument is omitted, all performance entries with an entry type of "mark" will be removed.

Return value

void

Example

The following example shows both uses of the clearMarks() method.

function clear_mark(name) {
  if (performance.clearMarks === undefined) {
    console.log("performance.clearMarks Not supported");
    return;
  }
  // Remove all "mark" performance entry types with the specified name
  performance.clearMarks(name);
}
function clear_all_marks() {
  if (performance.clearMarks === undefined) {
    console.log("performance.clearMarks Not supported");
    return;
  }
  // Remove all "mark" type performance entries from the performance buffer
  performance.clearMarks();
}

Specifications

Specification Status Comment
User Timing Level 2
The definition of 'clearMarks()' in that specification.
Working Draft Clarifies clearMarks().
User Timing
The definition of 'clearMarks()' in that specification.
Recommendation Basic definition.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 43 Yes 41 10 33 11
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support 46 46 Yes 42 33 11 ?

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Performance/clearMarks