<html lang="en">
<head>
<meta charset="utf-8">
<title>:tabbable Selector 实例</title>
<link rel="stylesheet" href="https://libs.baidu.com/jqueryui/1.10.4/css/jquery-ui.min.css">
<style>
input {
border: 1px solid #000;
}
div {
padding: 5px;
}
</style>
<script src="https://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script src="https://libs.baidu.com/jqueryui/1.10.4/jquery-ui.min.js"></script>
</head>
<body>
<div><input value="没有 tabindex"></div>
<div><input tabindex="5" value="正的 tabindex"></div>
<div><input tabindex="-1" value="负的 tabindex"></div>
<script>
$( ":tabbable" ).css( "border-color", "red" );
</script>
</body>
</html>