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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" lang="zh" xml:lang="zh"> <head> <meta http-equiv="Content-Type" content="text/html; -8" /> <meta name="developer" content="Realazy" /> <title>Blase im JavaScript-DOM</title> <style type="text/css" media="screen"> div * {display: Block; Rand: 4px; Polsterung:4px; border:1px einfarbig weiß;} 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 = '鼠标现在进入的是: ' + this.nodeName; }; all[i].onmouseout = function(e){ this.style.border = '1px einfarbig weiß'; }; } 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) //Weitere Informationen e.stopPropagation(); sonst window.event.cancelBubble = true; log.value = '鼠标现在进入的是: ' + this.nodeName; }; all2[i].onmouseout = function(e){ this.style.border = '1px einfarbig weiß'; }; } } window.onload = init; //]]> </script> </head> <body> <h1>Bubble in JavaScript DOM</h1> <p>DOM树的结构是：</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>鼠标进入UL的任何一个子元素，如果不停止冒泡,我们从UL到SPAN都定义了鼠标悬停（<code>mouseover</code>）事件,这个事件会上升了UL,从而从鼠标所进入的元素到UL元素都会有红色的边. </p> <div> <ul> <li><a href="#"><span>Bubbllllllllllllllle</span></a></li> <li><a href="#"><span > Bubblllllllllllle </span> </a> </li> </ul> </div> <p> 如果停止冒泡 ， 事件不会上升 ， 我们就可以获取精确的鼠标进入元素。 </p> < /body> </html>
