High Resolution Time API

- REC

Method to provide the current time in sub-millisecond resolution and such that it is not subject to system clock skew or adjustments. Called using performance.now()

IE

  1. 5.5 - 9: Not supported
  2. 10: Supported
  3. 11: Supported

Edge

  1. 12 - 100: Supported
  2. 101: Supported

Firefox

  1. 2 - 14: Not supported
  2. 15 - 99: Supported
  3. 100: Supported
  4. 101 - 102: Supported

Chrome

  1. 4 - 19: Not supported
  2. 20 - 23: Supported
  3. 24 - 100: Supported
  4. 101: Supported
  5. 102 - 104: Supported

Safari

  1. 3.1 - 7.1: Not supported
  2. 8 - 15.3: Supported
  3. 15.4: Supported
  4. TP: Supported

Opera

  1. 9 - 12.1: Not supported
  2. 15 - 85: Supported
  3. 86: Supported
  4. 87: Supported

Safari on iOS

  1. 3.2 - 7.1: Not supported
  2. 8: Supported
  3. 8.1: Not supported
  4. 9 - 15.3: Supported
  5. 15.4: Supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.3: Not supported
  2. 4.4 - 4.4.4: Supported
  3. 101: Supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 64: Supported

Chrome for Android

  1. 101: Supported

Firefox for Android

  1. 100: Supported

UC Browser for Android

  1. 12.12: Supported

Samsung Internet

  1. 4 - 15.0: Supported
  2. 16.0: Supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Supported

KaiOS Browser

  1. 2.5: Supported

The timestamp is not actually high-resolution. To mitigate security threats such as Spectre, browsers currently round the result to varying degrees.

Resources:
Demo
HTML5Rocks article
MDN Web Docs - Performance.now
SitePoint article