<!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><script src="jquery-1.6.4.min.js"></script><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>jquery应用</title></head><script type="text/javascript"> var i=1; $(document).ready(function(e) { $("#a").click(function(){ if(i%2==0) { $("#c").show(200); } else { $("#c").hide(200); } i++; }); });</script><style>.al{ width:40px; height:40px; float:left;}.c1{ list-style-type:none; width:150px; margin-left:20px; }</style><body><div align="center"> <div id="#a" class="a1">+</div> <div id="#c" class="c1"> <li>c</li> <li>java</li> <li>jquery</li> <li>css</li> <li>api</li> </div></div></body></html>
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