寫法類似于上一篇，水平進度條拖拽，具體內容如下
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style> *{ margin: 0; padding: 0; } .nav{ width: 100%; height: 20px; background-color: #ccc; } .popup{ width: 300px; height: 300px; border: 1px solid red; position: absolute; left: 50%; top: 50%; margin-left: -150px; margin-top: -150px; } .popup .title{ height: 20px; width: 100%; background: deeppink; cursor: move; } </style> </head><body> <div class="nav">注冊信息</div> <div class="popup" id="popupfather"> <div class="title" id="popupson">我是窗口標題，可拖著我走</div> <div class="content">我是窗口內容</div> </div> <script> var popupfather = document.getElementById('popupfather'); var popupson = document.getElementById('popupson'); popupson.onmousedown = function(event){ var event = event || window.event; var that = this; var x = event.clientX - popupfather.offsetLeft - 150; //當前鼠標點擊處相對于popupfather所在位置x ， -150 是處理margin值 var y = event.clientY - popupfather.offsetTop - 150; //當前鼠標點擊處相對于popupfather所在位置y document.onmousemove = function(event){ var event = event || window.event; popupfather.style.left = event.clientX - x + "px"; popupfather.style.top = event.clientY- y + "px"; window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty(); } } document.onmouseup = function(){ document.onmousemove = null; } </script></body></html> 效果圖：
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