Can I use
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relList (DOMTokenList)

- LS

Method of easily manipulating rel attribute values on elements, using the DOMTokenList object (similar to classList).

Chrome

  1. 4 - 49: Not supported
  2. 50 - 64: Partial support
  3. 65 - 123: Supported
  4. 124: Supported
  5. 125 - 127: Supported

Edge

  1. 12 - 16: Not supported
  2. 17: Partial support
  3. 18 - 122: Supported
  4. 123: Supported

Safari

  1. 3.1 - 8: Not supported
  2. 9 - 17.3: Supported
  3. 17.4: Supported
  4. 17.5 - TP: Supported

Firefox

  1. 2 - 29: Not supported
  2. 30 - 124: Supported
  3. 125: Supported
  4. 126 - 128: Supported

Opera

  1. 9 - 36: Not supported
  2. 37 - 51: Partial support
  3. 52 - 108: Supported
  4. 109: Supported

IE

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

Chrome for Android

  1. 123: Supported

Safari on iOS

  1. 3.2 - 8.4: Not supported
  2. 9 - 17.3: Supported
  3. 17.4: Supported
  4. 17.5: Supported

Samsung Internet

  1. 4: Not supported
  2. 5 - 8.2: Partial support
  3. 9.2 - 23: Supported
  4. 24: 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. 123: Supported

Firefox for Android

  1. 124: Supported

QQ Browser

  1. 14.9: Supported

Baidu Browser

  1. 13.52: Supported

KaiOS Browser

  1. 2.5: Supported
  2. 3: Supported
Resources:
MDN Web Docs - DOMTokenList
domtokenlist polyfill