1 <!DOCTYPE html> 2 <html><!--树根--> 3 4 <head> 5 <meta charset="utf-8"> 6 <meta http-equiv="X-UA-Compatible" content="IE=edge"> 7 <title>Image Gallery</title> 8 <meta name="description" content="An interactive getting started guide for Brackets."> 9 <script type="text/javascript" src="showpic.js"></script> 10 </head> 11 <body> 12 <h1>Snapshots</h1> 13 <ul> 14 <li> 15 <a href="image/fudan.jpg" title="fudan university" onclick="showPic(this); return false;">fudan</a> 16 </li> 17 <li> 18 <a href="image/sunflower.jpg" title="sunflower" onclick="showPic(this);return false;">sunflower</a> 19 </li> 20 <li> <a href="image/waitan.jpg" title="waitan" onclick="showPic(this);return false;">waitan</a> 21 </li> 22 <li> 23 <a href="image/lijiang.jpg" title="lijiang" onclick="showPic(this);return false;">lijiang</a> 24 </li> 25 </ul> 26 <img id="placeholder" src="image/jiuzhaigou.jpeg" alt="my image gallery"/> 27 28 </body> 29 </html>
1 function showPic(whichpic) { 2 var source = whichpic.getAttribute("href"); 3 var placeholder = document.getElementById("placeholder"); 4 placeholder.setAttribute("src", source); 5 }
原文：http://www.cnblogs.com/dream-to-pku/p/5965027.html