【图】js实现图片显示局部鼠标经过显示全部的效果

这个是例如了CSS的margin负值和相对定位做的一个图片放大的效果。图片开始只是局部的，鼠标放上去显示整个图片。

<!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=gb2312" /> <title>无标题文档</title> <style> body{ font-size:12px; } ul,li,ol{ margin:0; padding:0; list-style:none; } .box{ margin:100px; clear:both;  border:1px solid #000; } .box ul li{ list-style:none; float:left; width:60px; height:60px; margin-left:10px; text-align:center;  border:1px solid #ccc;  } .box ul li a{ display:block; background:#f2f2f2; width:60px; height:60px; overflow:hidden; } .box a img{ margin:-25px 0px 0px -25px; border:0; } .box a:hover{ width:105px; height:140px; border:4px solid #f2f2f2; margin:-40px -50px -80px -50px; padding:1px; position:relative;  }/* 设置相对定位后才能盖住后面的层 */ .box a:hover img{ margin:0; border:0;  } .clear{clear:both;overflow:hidden;height:0;} </style> </head> <body> <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140" > <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140"  > <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140"  > <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140"  > <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140"  > <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140"  > <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140"  > <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140"  > <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140"  > <img src="http://img.tulaoshi.com/image/20160219/c23da214bb91c491a76b9df89d68676c.jpg" widt="105" height="140"  ></body> </html> </html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]