EnglishPal/app/templates/signup.html

{% block body %}
{% if session['logged_in'] %}
    You're logged in already! <a href="/logout">Logout</a>.
{% else %}
    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=0.5, maximum-scale=3.0, user-scalable=yes" />
    <link rel="stylesheet" href="static/css/login_service.css">
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE-edge,chrome=1">
    <link href="static/css/slide-unlock.css" rel="stylesheet">
    <script src="static/js/jquery.js"></script>
    <script src="static/js/jquery.slideunlock.js"></script>
    <script>
    var slider
    let username,password,password2
    $(document).ready(function() {
        slider = new SliderUnlock("#slider", {
                successLabelTip: "验证成功"
            }, function() {

        });
        slider.init(); // 初始化滑块解锁功能
    });

    function signup(){
        // 发起 AJAX 请求来处理注册
        username = $("#username").val().trim();
        password = $("#password").val().trim();
        password2 = $("#password2").val().trim();

        // 基本表单验证
        if (username === "" || password === "" || password2 === "") {
            alert('输入不能为空!');
            return false;
        }
        if (password.includes(' ') || password2.includes(' ')) {
            alert('输入不能包含空格!');
            return false;
        }
        if (password !== password2) {
            alert('确认密码与输入密码不一致！');
            return false;
        }
        if (password.length < 4) {
            alert('密码过于简单。(密码长度至少4位)');
            return false;
        }
        is_ok = slider.getIsOk();
        if(!is_ok){
            alert('没有滑动验证');
            return false;
        }
        $.post("/signup", {
            'username': username,
            'password': password
        }, function(response) {
            if (response.status === '0') {
                alert('用户名' + username + '已经被注册。');
                window.location.href = "/signup";
            } else if (response.status === '1') {
                alert('用户名密码验证失败。');
                window.location.href = "/signup";
            } else if (response.status === '2') {
                var f = confirm("恭喜，你已成功注册，你的用户名是" + username + '.\n点击“确认”开始使用，或点击“取消”返回首页');
                if (f) {
                    window.location.href = '/' + username + '/userpage';
                } else {
                    window.location.href = '/';
                }
            } else if (response.status === '3') {
                alert(response.warn);
            }
        });
        return false;
    }
</script>
    <p>{{ get_flashed_messages()[0] | safe }}</p>

    <div class="container">
        <section class="signin-heading">
            <h1>Sign up</h1>
        </section>

        <form>
            <p><input type="text" id="username" placeholder="输入用户名" class="username"></p>
            <p><input type="password" id="password" placeholder="输入密码" class="password"></p>
            <p><input type="password" id="password2" placeholder="确认密码" class="password"></p>

            <div id="slider">
                <div id="slider_bg"></div>
                <span id="label">>></span> <span id="labelTip">-----滑动验证你是不是人类</span>
            </div>

            <button type="button" class="btn" onclick="signup()">注册</button>
        </form>
    </div>

    <script>
        // Bind click event to the signup button
        $(".btn").click(function() {
            // Trigger slider unlock
            var slider = new SliderUnlock("#slider");
            slider.isOk();
        });
    </script>

{% endif %}
{% endblock %}