jquery表单选择器
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>jquery表单选择器</title>
<script type="text/javascript" src="jquery-3.3.1.js"></script>
</head>
<body>
<script type="text/javascript">
//
$(document).ready(function () {
$(':enabled').css('background','pink');
$(':disabled').css('background','red');
$(':selected').css('color','red');//下拉框
$(':checked').parent().css('color','red');
})
</script>
<form action="">
<input type="text" name="" id="" value="" />
<input type="text" name="" id="" value="" disabled="disabled"/>
<input type="text" name="" id="" value="" />
<input type="text" name="" id="" value="" />
<select name="">
<option value="">1</option>
<option value="" selected>2</option>
<option value="">3</option>
<option value="">4</option>
</select>
<br />
爱好：
<label for=""><input type="checkbox" />1</label>
<label for=""><input type="checkbox" checked/>2</label>
<label for=""><input type="checkbox" />3</label>
</form>
</body>
</html>