模态框(Modal Dialogue Box)也可叫做模态对话框,或者对话框,当一个模态框被打开时,用户可以与该对话框进行交互,点击关闭按钮可关闭该模态框!
功能实现:
1. 页面上有一个按钮,用于打开模态框,模态框默认隐藏;
2. 用户点击按钮,可打开模态框;用户点击模态框中的关闭或者点击页面其他地方可关闭该模态框
✦ 点击页面其他地方,关闭模态框,可用window.onclick事件
✦ 给关闭按钮绑定点击事件,按钮被点击,模态框Modal添加样式display:none;
✦ 给button按钮绑定点击事件,当按钮被点击时,模态框Modal添加样式display:block;
✦ 先获取页面上的button按钮,关闭按钮,以及模态框Modal
代码实现:
<html> <head> <style> /* 弹窗 (background) */ .modal { display: none; /* 默认隐藏 */ position: fixed; z-index: 1; padding-top: 100px; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgb(0,0,0); background-color: rgba(0,0,0,0.4); } /* 弹窗内容 */ .modal-content { position: relative; background-color: #fefefe; margin: auto; padding: 0; border: 1px solid #888; width: 35%; box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19); -webkit-animation-name: animatetop; -webkit-animation-duration: 0.4s; animation-name: animatetop; animation-duration: 0.4s } /* 添加动画 */ @-webkit-keyframes animatetop { from {top:-300px; opacity:0} to {top:0; opacity:1} } @keyframes animatetop { from {top:-300px; opacity:0} to {top:0; opacity:1} } /* 关闭按钮 */ .close { color: white; float: right; font-size: 28px; font-weight: bold; } .close:hover, .close:focus { color: #000; text-decoration: none; cursor: pointer; } .modal-header { padding: 2px 16px; background-color: #5587A2; color: white; } .modal-body {padding: 2px 16px;} .modal-footer { padding: 2px 16px; background-color: #5587A2; text-align: right; color: white; } </style> </head> <body> <!-- 打开弹窗按钮 --> <button>打开弹窗</button> <!-- 弹窗 --> <div> <!-- 弹窗内容 --> <div> <div> <span>×</span> <h2>弹窗头部</h2> </div> <div> <p>弹窗内容...</p> <p>弹窗内容...</p> </div> <div> <h3>弹窗底部</h3> </div> </div> </div> <script> // 获取弹窗 var modal = document.getElementById('myModal'); // 打开弹窗的按钮对象 var btn = document.getElementById("myBtn"); // 获取 <span> 元素,用于关闭弹窗 that closes the modal var span = document.getElementsByClassName("close")[0]; // 点击按钮打开弹窗 btn.onclick = function() { modal.style.display = "block"; } // 点击 <span> (x), 关闭弹窗 span.onclick = function() { modal.style.display = "none"; } // 在用户点击其他地方时,关闭弹窗 window.onclick = function(event) { if (event.target == modal) { modal.style.display = "none"; } } </script> </body> </html>