[accessibility] Replace <th> with <td> for both title and subtitle elements #679
Description
Currently, title and subtitle arguments in gt::tab_header() are rendered as <th> tag for html output.
However, please use <td> and just rely on css for their visual aspects.
<th> is semantically associated with either column or row headers, so using <th> tag for title and subtitle causes significant confusion for assistive technologies (e.g., screen readers or robots).
Now that we surround title and subtitle inside <thead>, that suffices.
Reprex
# Load package
library(gt)
# Create gt table with title and subtitle
airquality[1:10, ] %>%
gt::gt() %>%
gt::tab_header(
title = "Title",
subtitle = "Subtitle"
)
| Title | |||||
|---|---|---|---|---|---|
| Subtitle | |||||
| Ozone | Solar.R | Wind | Temp | Month | Day |
| 41 | 190 | 7.4 | 67 | 5 | 1 |
| 36 | 118 | 8.0 | 72 | 5 | 2 |
| 12 | 149 | 12.6 | 74 | 5 | 3 |
| 18 | 313 | 11.5 | 62 | 5 | 4 |
| NA | NA | 14.3 | 56 | 5 | 5 |
| 28 | NA | 14.9 | 66 | 5 | 6 |
| 23 | 299 | 8.6 | 65 | 5 | 7 |
| 19 | 99 | 13.8 | 59 | 5 | 8 |
| 8 | 19 | 20.1 | 61 | 5 | 9 |
| NA | 194 | 8.6 | 69 | 5 | 10 |
Created on 2020-11-07 by the reprex package (v0.3.0.9001)
Session info
sessioninfo::session_info()
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