JS练习-拖拽Drag and Drop
最近看书，练习下，写了个简单的拖拽
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<!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"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>简单拖拽</title><style type="text/css">html,body{overflow:hidden;}body,div,h2,p{margin:0;padding:0;}body{color:#fff;background:#000;font:12px/2 Arial;}p{padding:0 10px;margin-top:10px;}span{color:#ff0;padding-left:5px;}#wrapper{position:absolute;width:300px;height:150px;background:#333;border:2px solid #ccc; cursor:move;}</style></head><body><div id="wrapper"><p>This is a box.</p></div></body></html>??
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<script type="text/javascript">window.onload = function(){var oDiv = document.getElementById("wrapper");var posX,posY;var listener = false;oDiv.onmousedown = function(e){e = e || window.event;listener = true;posX = e.clientX - parseInt(oDiv.offsetLeft);posY = e.clientY - parseInt(oDiv.offsetTop);return false;};document.onmousemove = function(e){e = e || window.event;if (listener == true){oDiv.style.left = e.clientX - posX + "px";oDiv.style.top = e.clientY - posY + "px";}return false;};document.onmouseup=function(){listener=false;};}</script>?大牛们轻拍，本人菜鸟