CSS |:选中选择器
选中的选择器用于选择输入标签和单选按钮中所有选中的元素。该选择器与单选按钮、复选框和选项元素一起使用。
语法:
:checked {
// CSS property
}
例 1:
<!DOCTYPE html>
<html>
<head>
<title>checked selector property</title>
<style>
h1 {
color:green;
}
input:checked {
height: 8px;
width: 10px;
}
body {
width:60%;
}
</style>
</head>
<body>
<h1>GeeksforGeeks</h1>
<h2>:checked Selector</h2>
<form action="">
Gender:
<input type="radio" checked="checked" value="male" name="gender"> Male
<input type="radio" value="female" name="gender"> Female<br><br>
Computer Science Subjects:<br>
<input type="checkbox" checked="checked" value="Bike">Computer Network<br>
<input type="checkbox" checked="checked" value="Bike">Operating System<br>
<input type="checkbox" value="Bike">Mathematics<br>
<input type="checkbox" value="Bike">Physics<br>
</form>
</center>
</body>
</html>
输出:
例 2:
<!DOCTYPE html>
<html>
<head>
<title>checked selector</title>
<style>
option:checked {
height: 10px;
font-size:20px;
}
h1 {
color:green;
}
</style>
</head>
<body>
<center>
<h1>GeeksForGeeks</h1>
<h2>:checked Selector in <option> Element</h2>
<select>
<option value="DataStructure">Data Structure</option>
<option value="Computer Network">Computer Network</option>
<option value="Operating System">Operating System</option>
<option value="Computer Architecture">Computer Architecture</option>
</select>
</center>
</body>
</html>
输出:
支持的浏览器:支持的浏览器:勾选选择器如下:
- 苹果 Safari 3.2
- 谷歌 Chrome 4.0
- Firefox 3.5
- 歌剧 9.6
- Internet Explorer 9.0
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