Can I use
?

BigInt

- OTHER

Arbitrary-precision integers in JavaScript.

Chrome

  1. ❌ 4 - 66: Not supported
  2. ✅ 67 - 142: Supported
  3. ✅ 143: Supported
  4. ✅ 144 - 146: Supported

Edge

  1. ❌ 12 - 18: Not supported
  2. ✅ 79 - 142: Supported
  3. ✅ 143: Supported

Safari

  1. ❌ 3.1 - 13.1: Not supported
  2. ✅ 14 - 26.1: Supported
  3. ✅ 26.2: Supported
  4. ✅ TP: Supported

Firefox

  1. ❌ 2 - 64: Not supported
  2. ❌ 65 - 67: Disabled by default
  3. ✅ 68 - 145: Supported
  4. ✅ 146: Supported
  5. ✅ 147 - 149: Supported

Opera

  1. ❌ 9 - 53: Not supported
  2. ✅ 54 - 124: Supported
  3. ✅ 125: Supported

IE

  1. ❌ 5.5 - 10: Not supported
  2. ❌ 11: Not supported

Chrome for Android

  1. ✅ 143: Supported

Safari on iOS

  1. ❌ 3.2 - 13.7: Not supported
  2. ✅ 14 - 18.7: Supported
  3. ✅ 26.0: Supported
  4. ✅ 26.1: Supported

Samsung Internet

  1. ❌ 4 - 8.2: Not supported
  2. ✅ 9.2 - 28: Supported
  3. ✅ 29: 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 - 4.4.4: Not supported
  2. ✅ 143: Supported

Firefox for Android

  1. ✅ 146: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ✅ 13.52: Supported

KaiOS Browser

  1. ❌ 2.5: Not supported
  2. ✅ 3: Supported
Resources:
Blog article from Dr. Axel Rauschmayer
Firefox implementation bug
MDN Web Docs
Blog article from Google Developer
GitHub repository