jQuery :contains 选择器
定义和用法
:contains 选择器选取包含指定字符串的元素。
该字符串可以是直接包含在元素中的文本，或者被包含于子元素中。
经常与其他元素/选择器一起使用，来选择指定的组中包含指定文本的元素（如下面的例子）。
<!DOCTYPE HTML>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
<style>
</style>
</head>
<body>
<h1>Welcome to My Homepage</h1>
<p class="intro">My name is Donald</p>
<p>I live in Duckburg</p>
<p>My best friend is Mickey</p>
<div id="choose">
Who "is" your favourite:
<ul>
<li>Goofy</li>
<li>Mickey</li>
<li>Pluto</li>
</ul>
</div>
</body>
<script type="text/javascript">
$(document).ready(function(){
debugger
$("p:contains(is)").css("background-color","#B2E0FF");
});
</script>
</html>
例子
<!DOCTYPE HTML>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
<style>
</style>
</head>
<body>
<div class="floorinside">F01</div>
<div class="floorinside">F02</div>
<div class="floorinside">F03</div>
<div class="floorinside">F04</div>
<div class="floorinside">F05</div>
</body>
<script type="text/javascript">
$(".floorinside:contains(F02)").css("background-color", "#B2E0FF");
</script>
</html>
例子：
<!DOCTYPE HTML>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
<style>
</style>
</head>
<body>
<div class="floorinside">F01</div>
<div class="floorinside">F02</div>
<div class="floorinside">F03</div>
<div class="floorinside">F04</div>
<div class="floorinside">F05</div>
</body>
<script type="text/javascript">
var drawing = "02"
$(".floorinside:contains(F" + drawing + ")").css("background-color", "#B2E0FF");
</script>
</html>
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