Request API: keepalive

IE

  1. 6 - 10: Not supported
  2. 11: Not supported

Edge

  1. 12 - 14: Not supported
  2. 15 - 93: Supported
  3. 94: Supported

Firefox

  1. 2 - 92: Not supported
  2. 93: Not supported
  3. 94 - 95: Not supported

Chrome

  1. 4 - 65: Not supported
  2. 66 - 93: Supported
  3. 94: Supported
  4. 95 - 97: Supported

Safari

  1. 3.1 - 12.1: Not supported
  2. 13 - 14.1: Supported
  3. 15: Supported
  4. TP: Supported

Opera

  1. 10 - 42: Not supported
  2. 43 - 79: Supported
  3. 80: Supported

Safari on iOS

  1. 3.2 - 12.5: Not supported
  2. 13 - 14.8: Supported
  3. 15: Supported

Opera Mini

  1. all: Support unknown

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 94: Supported

Opera Mobile

  1. 12 - 12.1: Not supported
  2. 64: Supported

Chrome for Android

  1. 94: Supported

Firefox for Android

  1. 92: Not supported

UC Browser for Android

  1. 12.12: Support unknown

Samsung Internet

  1. 4 - 8.2: Not supported
  2. 9.2 - 14.0: Supported
  3. 15.0: Supported

QQ Browser

  1. 10.4: Support unknown

Baidu Browser

  1. 7.12: Support unknown

KaiOS Browser

  1. 2.5: Support unknown