The :checked
CSS pseudo-class selector represents any radio (<input type="radio">
), checkbox (<input type="checkbox">
), or option (<option>
in a <select>
) element that is checked or toggled to an on
state.
The user can engage this state by checking/selecting an element, or disengage it by unchecking/deselecting the element.
Note: Because browsers often treat <option>
s as replaced elements, the extent to which they can be styled with the :checked
pseudo-class varies from browser to browser.
HTML
<div>
<input type="radio" name="my-input" id="yes" value="yes" />
<label for="yes">Yes</label>
<input type="radio" name="my-input" id="no" value="no" />
<label for="no">No</label>
</div>
<div>
<input type="checkbox" name="my-checkbox" id="opt-in" />
<label for="opt-in">Check me!</label>
</div>
<select name="my-select" id="fruit">
<option value="opt1">Apples</option>
<option value="opt2">Grapes</option>
<option value="opt3">Pears</option>
</select>
CSS
div,
select {
margin: 8px;
}
input:checked + label {
color: red;
}
input[type="radio"]:checked {
box-shadow: 0 0 0 3px orange;
}
input[type="checkbox"]:checked {
box-shadow: 0 0 0 3px hotpink;
}
option:checked {
box-shadow: 0 0 0 3px lime;
color: red;
}
Result
This example utilizes the :checked
pseudo-class to let the user toggle content based on the state of a checkbox, all without using JavaScript.
HTML
<input type="checkbox" id="expand-toggle" />
<table>
<thead>
<tr>
<th>Column #1</th>
<th>Column #2</th>
<th>Column #3</th>
</tr>
</thead>
<tbody>
<tr class="expandable">
<td>[more text]</td>
<td>[more text]</td>
<td>[more text]</td>
</tr>
<tr>
<td>[cell text]</td>
<td>[cell text]</td>
<td>[cell text]</td>
</tr>
<tr>
<td>[cell text]</td>
<td>[cell text]</td>
<td>[cell text]</td>
</tr>
<tr class="expandable">
<td>[more text]</td>
<td>[more text]</td>
<td>[more text]</td>
</tr>
<tr class="expandable">
<td>[more text]</td>
<td>[more text]</td>
<td>[more text]</td>
</tr>
</tbody>
</table>
<label for="expand-toggle" id="expand-btn">Toggle hidden rows</label>
CSS
#expand-toggle {
display: none;
}
.expandable {
visibility: collapse;
background: #ddd;
}
#expand-btn {
display: inline-block;
margin-top: 12px;
padding: 5px 11px;
background-color: #ff7;
border: 1px solid;
border-radius: 3px;
}
#expand-toggle:checked ~ * .expandable {
visibility: visible;
}
#expand-toggle:checked ~ #expand-btn {
background-color: #ccc;
}
Result
BCD tables only load in the browser with JavaScript enabled. Enable JavaScript to view data.