js登录滑动验证的实现(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="external nofollow"
 rel="stylesheet">
<link href="<%=basePath%>/res/css/font-awesome.min93e3.css?v=4.4.0" rel="external nofollow"
 rel="stylesheet">
<link href="<%=basePath%>/res/css/animate.min.css" rel="external nofollow" rel="stylesheet">
<link href="<%=basePath%>/res/css/style.min862f.css?v=4.1.0" rel="external nofollow"
 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#" rel="external nofollow" ><small>忘记密码了？</small></a> | <a
   href="<%=basePath%>/register" rel="external nofollow" >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>

以上这篇js登录滑动验证的实现(不滑动无法登陆)就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持我们。

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