JavaScript实现弹出式可拖动登录框
本文实例为大家分享了JavaScript实现弹出式可拖动登录框的具体代码,供大家参考,具体内容如下
效果图展示:
总体来说实现起来比较简单,老规矩,先搭建html框架,代码如下:
<div class="login-header"><a id="link" href="javascript:;" >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>
css代码:
<style> .login-header { width: 100%; text-align: center; height: 30px; font-size: 24px; line-height: 30px; } *{ 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>
有没有觉得CSS才是最复杂难搞的
最后是js代码:这里我们只让盒子的title部分能拖动,也就是登录框头部部分
<script> //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'); //创建点击事件,点击link后,登录框显示 link.addEventListener('click', function() { mask.style.display = 'block'; login.style.display = 'block'; }) //关闭后,登录框隐藏 closeBtn.addEventListener('click', function() { mask.style.display = 'none'; login.style.display = 'none'; }) //鼠标按下,获取登录框位置 title.addEventListener('mousedown', function(e) { var x = e.pageX - login.offsetLeft; var y = e.pageY - login.offsetTop; //鼠标移动,触发移动事件 document.addEventListener('mousemove', move) function move(e) { login.style.left = e.pageX - x + 'px'; login.style.top = e.pageY - y + 'px'; } //鼠标抬起,销毁鼠标移动事件 document.addEventListener('mouseup', function() { document.removeEventListener('mousemove', move); }) }) </scrip>
这样就实现了简单的弹出式可移动登录框。快上手练练吧
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