CSS :focus 选择器的作用
cssweb developmentfront end technology更新于 2025/5/10 3:24:17
使用 :focus 选择器来选择获得焦点的元素。您可以尝试运行以下代码来实现 :focus 选择器
示例
<!DOCTYPE html>
<html>
<head>
<style>
input:focus {
background-color: green;
}
</style>
</head>
<body>
<form action = "">
Subject <input type = "text" name = "subject"><br>
Student: <input type = "text" name = "student"><br>
Age: <input type = "number" name = "age"><br>
<input type = "submit" value = "Submit">
</form>
</body>
</html>
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有用资源
css 参考教程 - 该教程包含有关 css 的更多信息:https://www.cainiaomax.com/css/

