js登录滑动验证,不滑动无法登陆

js的判断这里是根据滑块的位置进行判断,应该是用一个flag判断

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%
    String basePath = request.getContextPath();
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>登录</title>

<link href="<%=basePath%>/res/css/bootstrap.min14ed.css?v=3.3.6"
    rel="stylesheet">
<link href="<%=basePath%>/res/css/font-awesome.min93e3.css?v=4.4.0"
    rel="stylesheet">

<link href="<%=basePath%>/res/css/animate.min.css" rel="stylesheet">
<link href="<%=basePath%>/res/css/style.min862f.css?v=4.1.0"
    rel="stylesheet">
<!--[if lt IE 9]>
    <meta http-equiv="refresh" content="0;ie.html" />
    <![endif]-->
<script>
    if (window.top !== window.self) {
        window.top.location = window.location;
    }
</script>
<style>
* {
    margin: 0;
    padding: 0;
}

body {
    font: 12px/1.125 Microsoft YaHei;
    background: #fff;
}

ul, li {
    list-style: none;
}

a {
    text-decoration: none;
}

.ani {
    transition: all .3s;
}

.wrap {
    width: 300px;
    height:;
    text-align: center;
    margin: 150px auto;
}

.inner {
    padding: 15px;
}

.clearfix {
    overflow: hidden;
    _zoom: 1;
}

.none {
    display: none;
}

#slider {
    position: relative;
    background-color: #e8e8e8;
    width: 300px;
    height: 34px;
    line-height: 34px;
    text-align: center;
}

#slider .handler {
    position: absolute;
    top: 0px;
    left: 0px;
    width: 40px;
    height: 32px;
    border: 1px solid #ccc;
    cursor: move;
}

.handler_bg {
    background: #fff
        url("data:image/png;base64,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")
        no-repeat center;
}

.handler_ok_bg {
    background: #fff
        url("data:image/png;base64,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")
        no-repeat center;
}

#slider .drag_bg {
    background-color: #7ac23c;
    height: 34px;
    width: 0px;
}

#slider .drag_text {
    position: absolute;
    top: 0px;
    width: 300px;
    -moz-user-select: none;
    -webkit-user-select: none;
    user-select: none;
    -o-user-select: none;
    -ms-user-select: none;
}

.unselect {
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
}

.slide_ok {
    color: #fff;
}
</style>
</head>
<style>
.btn-primary {
    background-color: #0000FF;
}

.btn-primary:hover {
    background-color: #0000FF;
}

.btn-primary {
    background-color: #0000FF;
    border-color: #0000FF;
}
</style>
<body class="gray-bg">

    <div class="middle-box text-center loginscreen  animated fadeInDown">
        <div>

            <h3 style="margin-top: 100px;">欢迎登录</h3>

            <form class="m-t" role="form" action="<%=basePath%>/login"
                method="POST" onsubmit="return login();">
                <div class="form-group">
                    <input name="username" id="username" type="text"
                        class="form-control" placeholder="用户名" required="">
                </div>
                <div class="form-group">
                    <input type="password" name="password" id="password"
                        class="form-control" placeholder="密码" required="">
                </div>
                
                <div class="wrap" style="margin: 10px auto 10px">
                    <div id="slider">
                        <div class="drag_bg"></div>
                        <div class="drag_text" onselectstart="return false;"
                            unselectable="on">拖动滑块验证</div>
                        <div class="handler handler_bg"></div>
                    </div>
                </div>
                <input type="hidden" name="${_csrf.parameterName}"
                    value="${_csrf.token}">
                <button type="submit" style="background-color: #0000FF;" class="btn btn-primary block full-width m-b">登
                    录</button>

                <%
                    if (request.getParameter("error") != null) {
                %>
                <span id="" style="color: red;">账号或者密码错误!</span>
                <%
                    }
                %>
                <%
                    if (request.getParameter("logout") != null) {
                %>
                <span>已经安全退出!</span>
                <%
                    }
                %>
                <p class="text-muted text-center">
                    <a href="login.html#"><small>忘记密码了?</small></a> | <a
                        href="<%=basePath%>/register">注册一个新账号</a>
                </p>

            </form>
        </div>
    </div>
    <script src="<%=basePath%>/res/js/jquery.min.js?v=2.1.4"></script>
    <script src="<%=basePath%>/res/js/bootstrap.min.js?v=3.3.6"></script>

</body>
<script type="text/javascript"
    src="<%=basePath%>/res/js/jquery-1.12.4.min.js"></script>
<script type="text/javascript" src="<%=basePath%>/res/js/jquery.md5.js"></script>
<script type="text/javascript">
    $(function() {
        $('#username').val();
    });

    function login() {
        if($(".drag_bg").width()<260){
            return false;
        }
        var password = $('#password').val();
        password = $.md5(password);
        console.log(password);
        $('#password').val(password);
        return true;
    }
</script>
<script>
    (function(window, document, undefined) {
        var dog = {//声明一个命名空间,或者称为对象
            $ : function(id) {
                return document.querySelector(id);
            },
            on : function(el, type, handler) {
                el.addEventListener(type, handler, false);
            },
            off : function(el, type, handler) {
                el.removeEventListener(type, handler, false);
            }
        };
        //封装一个滑块类
        function Slider() {
            var args = arguments[0];
            for ( var i in args) {
                this[i] = args[i]; //一种快捷的初始化配置
            }
            //直接进行函数初始化,表示生成实例对象就会执行初始化
            this.init();
}
Slider.prototype = {
            constructor : Slider,
            init : function() {
                this.getDom();
                this.dragBar(this.handler);
            },
            getDom : function() {
                this.slider = dog.$('#' + this.id);
                this.handler = dog.$('.handler');
                this.bg = dog.$('.drag_bg');
            },
            dragBar : function(handler) {
                var that = this, startX = 0, lastX = 0, doc = document, width = this.slider.offsetWidth, max = width
                        - handler.offsetWidth, drag = {
                    down : function(e) {
                        var e = e || window.event;
                        that.slider.classList.add('unselect');
                        startX = e.clientX - handler.offsetLeft;
                        console.log('startX: ' + startX + ' px');
                        dog.on(doc, 'mousemove', drag.move);
                        dog.on(doc, 'mouseup', drag.up);
                        return false;
                    },
                    move : function(e) {
                        var e = e || window.event;
                        lastX = e.clientX - startX;
                        lastX = Math.max(0, Math.min(max, lastX)); //这一步表示距离大于0小于max,巧妙写法
                        console.log('lastX: ' + lastX + ' px');
                        if (lastX >= max) {
                            handler.classList.add('handler_ok_bg');
                            that.slider.classList.add('slide_ok');
                            dog.off(handler, 'mousedown', drag.down);
                            drag.up();
                        }
                        that.bg.style.width = lastX + 'px';
                        handler.style.left = lastX + 'px';
                    },
                    up : function(e) {
                        var e = e || window.event;
                        that.slider.classList.remove('unselect');
                        if (lastX < width) {
                            that.bg.classList.add('ani');
                            handler.classList.add('ani');
                            that.bg.style.width = 0;
                            handler.style.left = 0;
                            setTimeout(function() {
                                that.bg.classList.remove('ani');
                                handler.classList.remove('ani');
                            }, 300);
                        }
                        dog.off(doc, 'mousemove', drag.move);
                        dog.off(doc, 'mouseup', drag.up);
                    }
                };
                dog.on(handler, 'mousedown', drag.down);
            }
        };
        window.S = window.Slider = Slider;
    })(window, document);
    var defaults = {
        id : 'slider'
    };
    new S(defaults);
</script>
</html>

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