a11yTips — Use aria-describedby to provide an overview of…

Use aria-describedby to provide an overview of data tables

no. 070

Make sure data tables provide an overview marked up using the aria-describedby property

Despite decent support from user agents, HTML5 made the SUMMARY attribute on HTML tables obsolete sometime in 2009. As such, the W3C recommends authors rely on other mechanisms to describe complex data tables. Whenever data tables consist of more than just a grid of cells with headers in the first row and headers in the first column, and for any data table in general where users might have difficulty understanding the content, authors should include explanatory information introducing [...]

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