鼠标悬浮到表格的单元格上，将弹出一个框，框中显示这个单元格的内容。框失去焦点，框也消失。利用jQuery+javascript写的。

aaaaaaaaaa	bbbbbbbbbbbbbbbbbbbbbbb
cccccccccc	ddddddddd

代码如下

<html>
	<head>
	<script type="text/javascript" src="F:\workspace\JavaDemo\js\jquery-1.4.3.js"></script>
		<script type="text/javascript">
		$(function(){
			var d = $("<div id='d' style='background-color:white;border:1px solid #DCE6F5;display:none;padding:10px 20px 10px 20px;}'/> <div>");// 获取<div id="d">的
			var tableTag = $("table");
			tableTag.append(d);
			var dTag = d.get(0);
			var timer = null;
			$("td[name$='_td']").each(
				function(i){
					var tdTag = $(this);
					var offset = tdTag.offset();
					var left = offset.left;
					var top = offset.top;
					tdTag.mouseover(function(){
							timer=setTimeout(
								function(){
									timer=0;d.css("display","");
									dTag.style.position="absolute";
									dTag.style.left=left+10;
									dTag.style.top=top+3;
									d.text(tdTag.text());
								},1100
							);
						}
					);
					tdTag.mouseout(function(){
						if(timer)  {
							clearTimeout(timer);
							timer=0;
							return;
						}
						d.blur(function(){
							d.css("display","none");
						});
					});
				}
			);
		});
		</script>
		<title>悬浮</title>
	</head>
	<body>
		
		<table border="1" cellpadding="0" cellspacing="0" align="center">
			<tr height="30px">
				<td name="one_td">aaaaaaaaaa</td><td name="two_td">bbbbbbbbbbbbbbbbbbbbbbb</td>
			</tr>
			<tr height="30px">
				<td name="one_td">cccccccccc</td><td name="two_td">ddddddddd</td>
			</tr>
		</table>
	<body>
</html>

原文链接：https://blog.csdn.net/niuniu20008/article/details/6692299