JavaScript 이벤트 거품 데모

전송:
만약 당신 이 자 바스 크 립 트 의 사건 을 이해 하지 못 한다 면 거품 을 일 으 켜 아래 를 내 려 다 보 세 요:
 
<!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" lang="zh" xml:lang="zh">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="developer" content="Realazy" />
<title>Bubble in JavaScript DOM</title>
<style type="text/css" media="screen">
 div * {display:block; margin:4px; padding:4px; border:1px solid white;}
 textarea {width:20em; height:2em;}
</style>
<script type="text/javascript">
    //<![CDATA[
    function init(){
  var log = document.getElementsByTagName('textarea')[0];
  var all = document.getElementsByTagName('div')[0].getElementsByTagName('*');
  for (var i = 0, n = all.length; i < n; ++i){
   all[i].onmouseover = function(e){
    this.style.border = '1px solid red';

    log.value = '        : ' + this.nodeName;
   };
   all[i].onmouseout = function(e){
    this.style.border = '1px solid white';
   };
  }

  var all2 = document.getElementsByTagName('div')[1].getElementsByTagName('*');
  for (var i = 0, n = all2.length; i < n; ++i){
   all2[i].onmouseover = function(e){
    this.style.border = '1px solid red';

    if (e) //      
     e.stopPropagation();
    else
     window.event.cancelBubble = true;
    
    log.value = '        : ' + this.nodeName;
   };
   all2[i].onmouseout = function(e){
    this.style.border = '1px solid white';
   };
  }
 }
 window.onload = init;
    //]]>
</script>
</head>
<body>
<h1>Bubble in JavaScript DOM</h1>
<p>DOM     :</p>
<pre><code>
UL
  - LI
     - A
   - SPAN
</code></pre>
<div>
 <ul>
  <li><a href="#"><span>Bubbllllllllllllllle</span></a></li>
  <li><a href="#"><span>Bubbllllllllllllllle</span></a></li>
 </ul>
</div>
<textarea></textarea>
<p>    UL        ,       ,   UL SPAN        (<code>mouseover</code>)  ,        UL,            UL         。</p>
<div>
 <ul>
  <li><a href="#"><span>Bubbllllllllllllllle</span></a></li>
  <li><a href="#"><span>Bubbllllllllllllllle</span></a></li>
 </ul>
</div>
<p>      ,      ,                。</p>
</body>
</html>

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