JQ_toggleClass.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>JQuety改变css属性</title>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs
/jquery/1.4.0/jquery.min.js"></script>
    <script>
        $(document).ready(function() {
            $("button").click(function() {
                $("h1,p").toggleClass("red");
            });
        });
    </script>
    <style type="text/css">
        h1, p {
            color: blue;
        }
        .red {
            color: red;
        }
    </style>
</head>
<body>
    <h1>h1标题蓝色</h1>
    <p>段落蓝色</p>
    <button>改变颜色</button>
</body>
</html>