<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <title>高級拖動</title>
 <style>
  #toBeDraged{
  width:100px;
  height:100px;
  line-height:100px;
  border:1px solid red;
  position:absolute;
  text-align:center;
  font-family:Arial, Helvetica, sans-serif;
  cursor:move;
  }
 </style>
 <script type= "text/javascript">
  window.onload = function(){
  doDrag();
  }
  function doDrag(){
  var div = document.getElementById("toBeDraged");
  var posx;
  var posy;
  div.onmousedown = function(e){
   var e = e || window.event;
   if (div.setCapture) {
   div.setCapture();
   }
   posx = e.clientX - parseInt(div.offsetLeft);
   posy = e.clientY - parseInt(div.offsetTop);
   document.onmousemove = function(ev){
   var ev = ev || window.event;//如果是IE
   if (ev.setcapture) {
   }
   div.style.left = (ev.clientX - posx)+"px";
   div.style.top = (ev.clientY - posy)+"px";
   }
   document.onmouseup = function(){
   document.onmousemove = null;
   document.onmouseup = null;
   if (div.releaseCapture) {
    div.releaseCapture();
   }
   }
  }
  }
 </script>
 </head>
 <body>
 <div id = "toBeDraged">你拖我啊!</div>
 </body>
</html>

更多關(guān)于JavaScript相關(guān)內(nèi)容感興趣的讀者可查看本站專題：《JavaScript切換特效與技巧總結(jié)》、《JavaScript查找算法技巧總結(jié)》、《JavaScript動畫特效與技巧匯總》、《JavaScript錯誤與調(diào)試技巧總結(jié)》、《JavaScript數(shù)據(jù)結(jié)構(gòu)與算法技巧總結(jié)》、《JavaScript遍歷算法與技巧總結(jié)》及《JavaScript數(shù)學(xué)運算用法總結(jié)》

希望本文所述對大家JavaScript程序設(shè)計有所幫助。

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