弹出拖动层 - 走看看

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弹出拖动层

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <title></title> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <style type="text/css"> *{margin:0;padding:0;} body{background:#fff;font-size:12px;} .drag_wrap{500px;height:300px;position:absolute;border:1px solid #ccc;display:none;z-index:3;background:#fff;} .drag_wrap h1{position:relative;height:35px;line-height:35px;text-indent:1em;font-size:14px;cursor:move;font-weight:normal;background:#efefef;border-bottom:1px solid #ccc;} .drag_wrap h1 span{position:absolute;font-size:12px;bottom:1px;right:10px;cursor:pointer;} .drag_cont{padding:10px;line-height:23px;text-indent:2em;} .mask{position:absolute;left:0;top:0;z-index:2;background:#000;filter:alpha(opacity=50);opacity: 0.5;} .in{margin:50px auto;80px;} </style> </head> <body> <div class="in"><input type="button" value="猛击我" onclick="drag.init().move('drag')" /></div> <div class="in"><a href="###" onclick="drag.init('drag2').move('drag2')">铁道部回应京沪高铁频出故障：设备处于磨合期</a></div> <div id="drag2" class="drag_wrap"> <h1>铁道部回应京沪高铁频出故障<span>关闭</span></h1> <div class="drag_cont"> <p>各位网友好！首先我要感谢人民网强国论坛为我提供与广大网友再聚的机会。在我来之前，看了许多网友的留言，其中就有一位网友提醒我要做好挨骂和挨拍的准备。是的，今天来到这里，就是代表铁路系统向大家真诚道歉、说明情况。京沪高铁开通半个月以来，总体客流和服务情况是好的。但近几天连续发生故障，影响列车正常运行</p> <p>6月30日，京沪高铁开通运营。请您介绍一下总体运营情况，比如开行列车数量、运送旅客人数、正点率、安全情况等。</p> </div> </div> <script type="text/javascript"> var drag = { $: function(){ return document.getElementById(arguments[0]);}, /** * 得到视口的大小 */ getWindowsSize: function(){ var de = document.documentElement, pageWidth = window.innerWidth, pageHeight = window.innerHeight; if(typeof pageWidth != 'number'){ //如果pageWidth不是数字,则ie,非ie支持innerWidth if(document.compatMode == 'CSS1Compat'){ //Standars mode 标准模式，完整dtd pageWidth = de.clientWidth; pageHeight = de.clientHeight; } else { //如果是 Quirks mode pageWidth = document.body.clientWidth; pageHeight = document.body.clientHeight; } } return { pageWidth, height: pageHeight } }, /** * 创建标签 * @param {String} target 标签名称，为空则创建一个空的div * @param {Object} config 属性列表 */ createElement: function(target, config){ target = target || 'div'; config = config || {}; var tag = document.createElement(target); for(var p in config){ if(p.toLowerCase() == 'style'){ tag.style.cssText = config[p]; } else if(p.toLowerCase() == 'class' || p.toLowerCase() == 'cls'){ tag.className = config[p]; } else if(p.toLowerCase() == 'innerHTML'){ tag.innerHTML = config[p]; } else { tag.setAttribute(p, config[p]); } } //此处try为释放tag引用，否则创建的DOM永远无法被释放 try{ return tag; } finally { tag = null; } }, getEvent: function(event){ return event ? event : window.event; }, init: function(id){ var that = this, ele = this.$(id) || false, winWidth = this.getWindowsSize().width, winHeight = this.getWindowsSize().height; if(!ele) { ele = this.createElement('div', { id: 'drag', cls: 'drag_wrap' }); var h1 = this.createElement('h1'); h1.innerHTML = '我是标题栏'; var span = this.createElement('span'); span.innerHTML = '关闭'; var cont = this.createElement('div', { cls: 'drag_cont' }); cont.innerHTML = '<p>上半年，面对复杂多变的国际形势和国内经济运行出现的新情况新问题，党中央、国务院坚持实施积极的财政政策和稳健的货币政策，不断加强和改善宏观调控，经济运行总体良好，继续朝着宏观调控预期方向发展。</p><p>初步测算，上半年国内生产总值204459亿元，按可比价格计算，同比增长9.6%；其中，一季度增长9.7%，二季度增长9.5%。分产业看，第一产业增加值15700亿元，增长3.2%；第二产业增加值102178亿元，增长11.0%；第三产业增加值86581亿元，增长9.2%。从环比看，二季度国内生产总值增长2.2%。</p>'; h1.appendChild(span); ele.appendChild(h1); ele.appendChild(cont); //ele.style.display = 'block'; document.body.appendChild(ele); span.onclick = function(){ document.body.removeChild(ele); document.body.removeChild(oMask); } } else { var handler = ele.getElementsByTagName('h1')[0], close = handler.getElementsByTagName('span')[0]; close.onclick = function(){ ele.style.display = 'none'; document.body.removeChild(oMask); } } var oMask = this.createElement('div', { cls: 'mask' }); oMask.style.cssText = '' + winWidth + 'px;height:' + winHeight + 'px;'; document.body.appendChild(oMask); ele.style.display = 'block'; ele.style.left = (winWidth - ele.offsetWidth)/2 + 'px'; ele.style.top = (winHeight - ele.offsetHeight)/2 + 'px'; return this; }, move: function(id){ var that = this, ele = this.$(id), winWidth = this.getWindowsSize().width, winHeight = this.getWindowsSize().height, posx, poy; if(!ele) return false; var handler = ele.getElementsByTagName('h1')[0], close = handler.getElementsByTagName('span')[0]; handler.onmousedown = function(e){ evt = that.getEvent(e); posx = evt.clientX - parseInt(ele.style.left); posy = evt.clientY - parseInt(ele.style.top); if (handler.setCapture) { //防止ie下拖动过快丢失对象 handler.setCapture(); } else if (window.captureEvents) { window.captureEvents(e.MOUSEMOVE | e.MOUSEUP); } document.onmousemove = function(e){ e = that.getEvent(e); var l = e.clientX - posx, t = e.clientY - posy; if(l < 0){ l = 0; } else if(l > winWidth - ele.offsetWidth){ l = winWidth - ele.offsetWidth; } if(t < 0){ t = 0; } else if(t > winHeight - ele.offsetHeight){ t = winHeight - ele.offsetHeight; } ele.style.left = l + 'px'; ele.style.top = t + 'px'; window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty(); //取消选择文本 } return false; //感谢清流鱼提出解决办法 }; document.onmouseup = function(e){ e = that.getEvent(e); if (handler.releaseCapture) { handler.releaseCapture(); } else if (window.captureEvents) { window.captureEvents(e.MOUSEMOVE | e.MOUSEUP); } document.onmousemove = null; }; return this; }, close: function(id){ var that = this, ele = this.$(id); if(!ele) return false; ele.style.display = 'none'; } } </script> </body> </html>
chorme下cursor:move样式丢失，感谢清流鱼提出解决办法，但还未搞清原理，记之。

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原文地址：https://www.cnblogs.com/jikey/p/1806059.html