点击按钮弹出Hello World

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>HelloWorld</title>
    <script src="js/jquery-1.12.4.js"></script>
</head>
<body>
    <button>点击</button>
</body>
</html>
<script>
    $(document).ready(function () {
        $("button").click(function () {
            alert("Hello World")
        });
    });
</script>

jquery打印json jquery打印出helloworld_JQuery