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()

Chrome

  1. ❌ 4 - 19: Not supported
  2. ✅ 20 - 23: Supported
  3. ✅ 24 - 155: Supported
  4. ✅ 156: Supported
  5. ✅ 157 - 159: Supported

Edge

  1. ✅ 12 - 154: Supported
  2. ✅ 155: Supported

Safari

  1. ❌ 3.1 - 7.1: Not supported
  2. ✅ 8 - 26.6: Supported
  3. ✅ 27: Supported
  4. ✅ 27.1 - TP: Supported

Firefox

  1. ❌ 2 - 14: Not supported
  2. ✅ 15 - 54: Supported
  3. ✅ 55 - 57: Supported
  4. ✅ 58 - 59: Supported
  5. ✅ 60 - 157: Supported
  6. ✅ 158: Supported
  7. ✅ 159 - 161: Supported

Opera

  1. ❌ 9 - 12.1: Not supported
  2. ✅ 15 - 134: Supported
  3. ✅ 135: Supported

IE

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

Chrome for Android

  1. ✅ 156: Supported

Safari on iOS

  1. ❌ 3.2 - 7.1: Not supported
  2. ✅ 8: Supported
  3. ❌ 8.1: Not supported
  4. ✅ 9 - 26.6: Supported
  5. ✅ 27.0: Supported
  6. ✅ 27.1 - 27.2: Supported

Samsung Internet

  1. ✅ 4 - 29: Supported
  2. ✅ 30: Supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

  1. ❌ 10 - 12.1: Not supported
  2. ✅ 80: Supported

UC Browser for Android

  1. ✅ 15.5: Supported

Android Browser

  1. ❌ 2.1 - 4.3: Not supported
  2. ✅ 4.4 - 4.4.4: Supported
  3. ✅ 156: Supported

Firefox for Android

  1. ✅ 158: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ✅ 13.52: Supported

KaiOS Browser

  1. ✅ 2.5: Supported
  2. ✅ 3: 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