This content originally appeared on DEV Community and was authored by John P. Rouillard
I wish the details element would support different labels (provided by the summary tag) for its open and closed states.
Consider a label of "Closed, click to open" when the details element is closed and "Open, click to close" when open:
Sadly only one summary tag is supported by the details element. However you can use an empty summary with a ::before pseudo-element to implement this.
Save the following to a file:
<html>
<body>
<style>
#widget1 div { padding-inline-start: 1em; max-width: 20em;}
#widget1 summary::before { content: "Closed, click to open";}
#widget1[open] summary::before { content: "Open, click to close";}
#widget1[open] summary { height: 2em;}
</style>
<p> Text before details.</p>
<details id="widget1">
<summary></summary>
<div>
A widget can be in one of two states. The default closed
state displays only the triangle and the label inside summary
(or a user agent-defined default string if no summary).
</div>
</details>
<p>Text after details.</p>
<body>
</html>
to experiment.
The second and third style lines are where the magic happens.
Note that it might not be accessible. I didn't try to see if adding a live region aria label to the summary would cause the label change to be announced. I suspect it will not, but refining this is left as an exercise for the reader. Add your experimental findings to the comments below.
This content originally appeared on DEV Community and was authored by John P. Rouillard
John P. Rouillard | Sciencx (2021-07-12T21:26:26+00:00) How to change details label when open/closed without JavaScript. Retrieved from https://www.scien.cx/2021/07/12/how-to-change-details-label-when-open-closed-without-javascript/
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