Request API: keepalive
IE
- 6 - 10: Not supported
- 11: Not supported
Edge
- 12 - 14: Not supported
- 15 - 87: Supported
- 88: Supported
Firefox
- 2 - 84: Not supported
- 85: Not supported
- 86 - 87: Not supported
Chrome
- 4 - 65: Not supported
- 66 - 88: Supported
- 89: Supported
- 90 - 92: Supported
Safari
- 3.1 - 13.1: Not supported
- 14: Not supported
- TP: Not supported
Opera
- 10 - 42: Not supported
- 43 - 72: Supported
- 73: Supported
iOS Safari
- 3.2 - 13.7: Not supported
- 14: Not supported
Opera Mini
- all: Support unknown
Android Browser
- 2.1 - 4.4.4: Not supported
- 81: Supported
Opera Mobile
- 12 - 12.1: Not supported
- 59: Supported
Chrome for Android
- 88: Supported
Firefox for Android
- 85: Not supported
UC Browser for Android
- 12.12: Support unknown
Samsung Internet
- 4 - 8.2: Not supported
- 9.2 - 12.0: Supported
- 13.0: Supported
QQ Browser
- 10.4: Support unknown
Baidu Browser
- 7.12: Support unknown
KaiOS Browser
- 2.5: Support unknown