javascript实现登录框拖拽
本文实例为大家分享了javascript实现登录框拖拽的具体代码,供大家参考,具体内容如下
效果:
代码:
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> .login-header { width: 100%; text-align: center; height: 30px; font-size: 24px; line-height: 30px; } ul, li, ol, dl, dt, dd, div, p, span, h1, h2, h3, h4, h5, h6, a { padding: 0px; margin: 0px; } .login { display: none; width: 512px; height: 280px; position: fixed; border: #ebebeb solid 1px; left: 50%; top: 50%; background: #ffffff; box-shadow: 0px 0px 20px #ddd; z-index: 9999; transform: translate(-50%, -50%); } .login-title { width: 100%; margin: 10px 0px 0px 0px; text-align: center; line-height: 40px; height: 40px; font-size: 18px; position: relative; cursor: move; } .login-input-content { margin-top: 20px; } .login-button { width: 50%; margin: 30px auto 0px auto; line-height: 40px; font-size: 14px; border: #ebebeb 1px solid; text-align: center; } .login-bg { display: none; width: 100%; height: 100%; position: fixed; top: 0px; left: 0px; background: rgba(0, 0, 0, .3); } a { text-decoration: none; color: #000000; } .login-button a { display: block; } .login-input input.list-input { float: left; line-height: 35px; height: 35px; width: 350px; border: #ebebeb 1px solid; text-indent: 5px; } .login-input { overflow: hidden; margin: 0px 0px 20px 0px; } .login-input label { float: left; width: 90px; padding-right: 10px; text-align: right; line-height: 35px; height: 35px; font-size: 14px; } .login-title span { position: absolute; font-size: 12px; right: -20px; top: -30px; background: #ffffff; border: #ebebeb solid 1px; width: 40px; height: 40px; border-radius: 20px; } </style> </head> <body> <div class="login-header"><a id="link" href="javascript:;" rel="external nofollow" >点击,弹出登录框</a></div> <div id="login" class="login"> <div id="title" class="login-title">登录会员 <span><a id="closeBtn" href="javascript:void(0);" rel="external nofollow" rel="external nofollow" class="close-login">关闭</a></span> </div> <div class="login-input-content"> <div class="login-input"> <label>用户名:</label> <input type="text" placeholder="请输入用户名" name="info[username]" id="username" class="list-input"> </div> <div class="login-input"> <label>登录密码:</label> <input type="password" placeholder="请输入登录密码" name="info[password]" id="password" class="list-input"> </div> </div> <div id="loginBtn" class="login-button"><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" id="login-button-submit">登录会员</a></div> </div> <!-- 遮盖层 --> <div id="bg" class="login-bg"></div> <script> // 1. 获取元素 var login = document.querySelector('.login'); var mask = document.querySelector('.login-bg'); var link = document.querySelector('#link'); var closeBtn = document.querySelector('#closeBtn'); var title = document.querySelector('#title'); // 2. 点击弹出层这个链接 link 让mask 和login 显示出来 link.addEventListener('click', function() { mask.style.display = 'block'; login.style.display = 'block'; }) // 3. 点击 closeBtn 就隐藏 mask 和 login closeBtn.addEventListener('click', function() { mask.style.display = 'none'; login.style.display = 'none'; }) // 4. 开始拖拽 // (1) 当我们鼠标按下, 就获得鼠标在盒子内的坐标 title.addEventListener('mousedown', function(e) { var x = e.pageX - login.offsetLeft; var y = e.pageY - login.offsetTop; // (2) 鼠标移动的时候,把鼠标在页面中的坐标,减去 鼠标在盒子内的坐标就是模态框的left和top值 document.addEventListener('mousemove', move) function move(e) { login.style.left = e.pageX - x + 'px'; login.style.top = e.pageY - y + 'px'; } // (3) 鼠标弹起,就让鼠标移动事件移除 document.addEventListener('mouseup', function() { document.removeEventListener('mousemove', move); }) }) </script> </body> </html>
注意:mousemove和mouseup应该在mousedown里面,并且目标对象是document,而不是title。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
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