How to implement sliding verification required for login in js-JS Tutorial-php.cn

Below I will share with you the implementation of js login sliding verification (you cannot log in without sliding). It has a good reference value and I hope it will be helpful to everyone.
The judgment of js is based on the position of the slider. It should be judged by a flag.
<%@ 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">
 <p class="middle-box text-center loginscreen animated fadeInDown">
 <p>
  <h3 style="margin-top: 100px;">欢迎登录</h3>
  <form class="m-t" role="form" action="<%=basePath%>/login"
  method="POST" onsubmit="return login();">
  <p class="form-group">
   <input name="username" id="username" type="text"
   class="form-control" placeholder="用户名" required="">
  </p>
  <p class="form-group">
   <input type="password" name="password" id="password"
   class="form-control" placeholder="密码" required="">
  </p>
  
  <p class="wrap" style="margin: 10px auto 10px">
   <p id="slider">
   <p class="drag_bg"></p>
   <p class="drag_text" onselectstart="return false;"
    unselectable="on">拖动滑块验证</p>
   <p class="handler handler_bg"></p>
   </p>
  </p>
  <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>
 </p>
 </p>
 <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() {
 $(&#39;#username&#39;).val();
 });
 function login() {
 if($(".drag_bg").width()<260){
  return false;
 }
 var password = $(&#39;#password&#39;).val();
 password = $.md5(password);
 console.log(password);
 $(&#39;#password&#39;).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.$(&#39;#&#39; + this.id);
  this.handler = dog.$(&#39;.handler&#39;);
  this.bg = dog.$(&#39;.drag_bg&#39;);
  },
  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(&#39;unselect&#39;);
   startX = e.clientX - handler.offsetLeft;
   console.log(&#39;startX: &#39; + startX + &#39; px&#39;);
   dog.on(doc, &#39;mousemove&#39;, drag.move);
   dog.on(doc, &#39;mouseup&#39;, 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(&#39;lastX: &#39; + lastX + &#39; px&#39;);
   if (lastX >= max) {
    handler.classList.add(&#39;handler_ok_bg&#39;);
    that.slider.classList.add(&#39;slide_ok&#39;);
    dog.off(handler, &#39;mousedown&#39;, drag.down);
    drag.up();
   }
   that.bg.style.width = lastX + &#39;px&#39;;
   handler.style.left = lastX + &#39;px&#39;;
   },
   up : function(e) {
   var e = e || window.event;
   that.slider.classList.remove(&#39;unselect&#39;);
   if (lastX < width) {
    that.bg.classList.add(&#39;ani&#39;);
    handler.classList.add(&#39;ani&#39;);
    that.bg.style.width = 0;
    handler.style.left = 0;
    setTimeout(function() {
    that.bg.classList.remove(&#39;ani&#39;);
    handler.classList.remove(&#39;ani&#39;);
    }, 300);
   }
   dog.off(doc, &#39;mousemove&#39;, drag.move);
   dog.off(doc, &#39;mouseup&#39;, drag.up);
   }
  };
  dog.on(handler, &#39;mousedown&#39;, drag.down);
  }
 };
 window.S = window.Slider = Slider;
 })(window, document);
 var defaults = {
 id : &#39;slider&#39;
 };
 new S(defaults);
</script>
</html>
Copy after login
The above is what I compiled for everyone. Yes, I hope it will be helpful to everyone in the future.
Set the background image in Vue
How to use vue less to implement a simple skin change function
How to implement the same interview question component using angular, react and vue
Use jQuery to automatically load when scrolling to the bottom
How to implement modal dialog box in Angular2.0
The above is the detailed content of How to implement sliding verification required for login in js. For more information, please follow other related articles on the PHP Chinese website!