selector list argument of :nth-child and :nth-last-child CSS pseudo-classes

- WD

The newest versions of :nth-child() and :nth-last-child() accept an optional of S clause which filters the children to only those which match the selector list S. For example, :nth-child(1 of .foo) selects the first child among the children that have the foo class (ignoring any non-foo children which precede that child). Similar to :nth-of-type, but for arbitrary selectors instead of only type selectors.

Chrome

  1. 4 - 110: Not supported
  2. 111 - 112: Supported
  3. 113: Supported
  4. 114 - 116: Supported

Edge

  1. 12 - 110: Not supported
  2. 111 - 112: Supported
  3. 113: Supported

Safari

  1. 3.1 - 8: Not supported
  2. 9 - 16.4: Supported
  3. 16.5: Supported
  4. 16.6 - TP: Supported

Firefox

  1. 2 - 112: Not supported
  2. 113: Supported
  3. 114 - 115: Supported

Opera

  1. 9 - 97: Not supported
  2. 98: Supported
  3. 99: Supported

IE

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

Chrome for Android

  1. 113: Supported

Safari on iOS

  1. 3.2 - 8.4: Not supported
  2. 9 - 16.4: Supported
  3. 16.5: Supported

Samsung Internet

  1. 4 - 20: Not supported
  2. 21: Not supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 73: Not supported

UC Browser for Android

  1. 13.4: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 113: Supported

Firefox for Android

  1. 113: Supported

QQ Browser

  1. 13.1: Not supported

Baidu Browser

  1. 13.18: Not supported

KaiOS Browser

  1. 2.5: Not supported
  2. 3: Not supported

For support information for just :nth-child() see CSS3 selector support

Resources:
Chromium Issue 304163: Implement :nth-child(an+b of S) and :nth-last-child(an+b of S) pseudo-classes
Mozilla Bug 854148 - Support for :nth-child(An+B of sel), :nth-last-child(An+B of sel) pseudo-classes
MS Edge Platform Status: Under Consideration