Implement the augmentation to attr() specified in CSS Level 4, which allows types besides <string> and usage in all CSS properties (besides pseudo-element 'content'). Note: CSS Level 4 has made substantial revisions to attr() compared to Level 3 to ease the implementation. We'll following CSS4.
This is a highly requested feature, with 77 stars at crbug.com/246571. We also want to keep it considered in the CR period by adding the first impelementation.
Unknown standards status - check spec link for status
Status in Chromium
Consensus & Standardization
Search tagscss, css-values, attr,
Last updated on 2021-10-16