标签：w3c标准 func width text fse 不清楚 scroll 背景 interval
简单的浮动代码，纯js代码，但不符合w3c标准，在有些HTML规范下不可行，
例如：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
具体原因不清楚，待大神告知。
完整代码如下（字母为背景测试）：
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>带关闭按钮的浮动窗口</title> </head> <style type="text/css"> #fdck {border:1px solid #c0c0c0;margin:0 auto;padding:5px;background:#f0f0f0} </style> <body> <div id="img" style="position: absolute; left: 311; top: 815;visibility :hidden;" onmouseover="clearInterval(interval)" onmouseout="interval = setInterval(‘changePos()‘, delay)" align="middle"> <span style="CURSOR:hand;color:red;font-weight:bold;font-size:12px" onclick="clearInterval(interval);img.style.visibility = ‘hidden‘">关闭</span> <div id="fdck" style=“border:1px;background:orange;”> 我是一个简单的浮动窗口 </div> </div> <div>advadvadadvadvadvadvadddddddddddddddddddddddadvadvadadvadvadvadvadddddddddddddddddddddddadvadvadadvadvadvadvadddddddddddddddddddddddadvadvadadvadvadvadvaddddddddddddddddddddddd</div> 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function changePos() { width = document.body.clientWidth; height = document.body.clientHeight; Hoffset = img.offsetHeight; Woffset = img.offsetWidth; img.style.left = xPos + document.body.scrollLeft; img.style.top = yPos + document.body.scrollTop; if (yon) { yPos = yPos + step; } else { yPos = yPos - step; } if (yPos < 0) { yon = 1; yPos = 0; } if (yPos >= (height - Hoffset)) { yon = 0; yPos = (height - Hoffset); } if (xon) { xPos = xPos + step; } else { xPos = xPos - step; } if (xPos < 0) { xon = 1; xPos = 0; } if (xPos >= (width - Woffset)) { xon = 0; xPos = (width - Woffset); } } function start() { img.style.visibility = "visible"; interval = setInterval(‘changePos()‘, delay); } start(); </script> </body> </html>
标签：w3c标准 func width text fse 不清楚 scroll 背景 interval
原文地址：http://www.cnblogs.com/libiner/p/7187990.html
