jQuery——切换toggle

toggle()-----显示隐藏

toggleClass-------添加类或者删除类

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="jquery-1.11.1.js"></script>
    <style>
        div {
            width: 100px;
            height: 100px;
            border: 1px solid #ccc;
        }

        .box1 {
            margin-right: 10px;
        }

        .show {
            background-color: red;
        }
    </style>

    <script src="jquery-1.11.1.js"></script>
    <script>
        $(function () {
            $("button").click(function () {
                $(".box1").toggleClass("show");
            });
        });
    </script>
</head>
<body>
<button>切换</button>
<div class="box1"></div>
</body>
</html>