案例弹出登录框
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</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 { width: 512px; position: absolute; border: #ebebeb solid 1px; height: 280px; left: 50%; right: 50%; background: #ffffff; box-shadow: 0px 0px 20px #ddd; z-index: 9999; margin-left: -256px; margin-top: 140px; display: none; } .login-title { width: 100%; margin: 10px 0px 0px 0px; text-align: center; line-height: 40px; height: 40px; font-size: 18px; position: relative; cursor: move; -moz-user-select:none;/*火狐*/ -webkit-user-select:none;/*webkit浏览器*/ -ms-user-select:none;/*IE10*/ -khtml-user-select:none;/*早期浏览器*/ user-select:none; } .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 { width: 100%; height: 100%; position: fixed; top: 0px; left: 0px; background-color: #000000; filter: alpha(opacity=30); -moz-opacity: 0.3; -khtml-opacity: 0.3; opacity: 0.3; display: none; } 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:void(0);">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);" 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);" id="login-button-submit">登录会员</a></div> </div> <!-- 遮盖层 --> <div id="bg" class="login-bg" ></div> <script> // 1. 点击按钮, 弹出登录框的遮盖层 var login = document.getElementById('login'); var bg = document.getElementById('bg'); var link = document.getElementById('link'); link.onclick = function () { // 显示登录框和遮盖层 login.style.display = 'block'; bg.style.display = 'block'; return false; } // 2. 点击关闭按钮, 隐藏登录框和遮盖层 var closeBtn = document.getElementById('closeBtn'); closeBtn.onclick = function () { login.style.display = 'none'; bg.style.dispaly = 'none'; } // 3 拖拽 var title = document.getElementById('title'); title.onmousedown = function (e) { // 鼠标按下, 求鼠标在盒子中的位置 var x = e.pageX - login.offsetLeft; var y = e.pageY - login.offsetTop; document.onmousemove = function (e) { var loginX = e.pageX - x; var loginY = e.pageY - y; login.style.left = loginX + 256 + 'px'; login.style.top = loginY - 140 + 'px'; } } title.onmouseup = function () { document.onmousemove = null; } </script> </body> </html>