实例代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="./jquery-1.8.0.min.js"></script>
<div id="name">
<div filed="count" style="color:blue;height:200px;width:200px;background-color: yellow">
</div>
</div>
<script>
console.log($("div[filed='count']"));
// $("div[filed='count']").css("display","none");
</script>
</head>
<body>
</body>
</html>