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Code Issues Releases Wiki Activity

Move [hidden] style from _utilities.scss to _reboot.scss; fixes #18230

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Chris Rebert
2015-11-12 19:15:54 -08:00
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docs/components/utilities.md
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@@ -318,19 +318,3 @@ Aspect ratios can be customized with modifier classes.
<iframe class="embed-responsive-item" src="..."></iframe>
</div>
{% endhighlight %}
## HTML5 `[hidden]` attribute
HTML5 adds [a new global attribute named `[hidden]`](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/hidden), which is styled as `display: none` by default. Borrowing an idea from [PureCSS](http://purecss.io), we improve upon this default by making `[hidden] { display: none !important; }` to help prevent its `display` from getting accidentally overridden. While `[hidden]` isn't natively supported by IE9-10, the explicit declaration in our CSS gets around that problem.
{% highlight html %}
<input type="text" hidden>
{% endhighlight %}
{% callout warning %}
#### jQuery incompatibility
`[hidden]` is not compatible with jQuery's `$(...).hide()` and `$(...).show()` methods. This could potentially change in jQuery 3, but we're not holding our breath. Therefore, we don't currently especially endorse `[hidden]` over other techniques for managing the `display` of elements.
{% endcallout %}
To merely toggle the visibility of an element, meaning its `display` is not modified and the element can still affect the flow of the document, use [the `.invisible` class](#invisible-content) instead.