CSS :valid Pseudo Class
The: valid pseudo-class selects <form> elements with a value that validates according to the element's settings.
The: valid selector only works for form <input> elements with min and max attributes, email fields with a legal email, number fields with a numeric value, or required fields with a not empty value.
Version ¶
HTML Living Standard
HTML5
Selectors Level 4
Syntax¶
:valid {
css declarations;
}Example of the: valid selector:¶
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
input {
border: 1px solid #cccccc;
padding: 5px 10px;
}
input:valid {
background-color: #eeeeee;
}
</style>
</head>
<body>
<h2>:valid selector example</h2>
<form>
<input type="email" value="web@example.com">
</form>
</body>
</html>In the given example when typing an illegal e-mail address, the styling disappears.
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