:hidden Selector
Selects all elements that are hidden.
.hidden()
Elements can be considered hidden for several reasons:
- They have a CSS
displayvalue ofnone. - They are form elements with
type="hidden". - Their width and height are explicitly set to 0.
- An ancestor element is hidden, so the element is not shown on the page.
Elements with visibility: hidden or opacity: 0 are considered to be visible, since they still consume space in the layout. During animations that hide an element, the element is considered to be visible until the end of the animation.
Elements that are not in a document are not considered to be visible; jQuery does not have a way to know if they will be visible when appended to a document since it depends on the applicable styles.
This selector is the opposite of the :visible selector. So, every element selected by :hidden isn't selected by :visible and vice versa.
During animations to show an element, the element is considered to be visible at the start of the animation.
How :hidden is determined was changed in jQuery 1.3.2. An element is assumed to be hidden if it or any of its parents consumes no space in the document. CSS visibility isn't taken into account (therefore $( elem ).css( "visibility", "hidden" ).is( ":hidden" ) == false). The release notes outline the changes in more detail.
jQuery 3 slightly modifies the meaning of :hidden (and therefore of :visible). Starting with this version, elements will be considered :hidden if they don't have any layout boxes. For example, br elements and inline elements with no content will not be selected by the :hidden selector.
Shows all hidden divs and counts hidden inputs.
<span></span>
<div></div>
<div style="display: none">Hider!</div>
<div></div>
<div class="starthidden">Hider!</div>
<div></div>
<form>
<input type="hidden" />
<input type="hidden" />
<input type="hidden" />
</form>
<span></span>
div {
width: 70px;
height: 40px;
background: #e7f;
margin: 5px;
float: left;
}
span {
display: block;
clear: left;
color: red;
}
.starthidden {
display: none;
}
// In some browsers :hidden includes head, title, script, etc...
var hiddenElements = $("body").find(":hidden").not("script");
$("span")
.first()
.text("Found " + hiddenElements.length + " hidden elements total.");
$("div:hidden").show(3000);
$("span")
.last()
.text("Found " + $("input:hidden").length + " hidden inputs.");