http://blog.rongzhiwang.com/baicaps/category/53.aspx javascript脚本 zh-CHS baicaps baicaps@126.com interwis.net Blog Version 3.0.0.0 http://blog.rongzhiwang.com/baicaps/archive/2010/06/10/javascriptdocument.getelementbyid.aspx <div> </div> <div>在博客园看到某篇<span style="font-size: 14px"><a href="http://www.cnblogs.com/fengfan/archive/2010/06/09/1754463.html" target="_blank"><span style="font-size: 14px">焦点图切换效果</span></a>觉得不错，便下来看看，发现它的<font face="Times New Roman">JavaScript</font>有<font face="Times New Roman">$</font>符号，还以为引用了prototype和jquery等框架，但发现并没有。原来它是这样：<br /> <br /> <font style="color: #ff0000" face="Times New Roman">function $(id){return document.getElementById(id);</font></span></div> <div> </div> <div>来实现<font size="3" face="Times New Roman">$代替document.getElementById的效果，虽然简单，但对于没有引用了prototype和jquery等框架的，避免了每次写<font size="3" face="Times New Roman">document.getElementById</font>，只需在一个公共<font face="Times New Roman">JavaScript文件定义后便可处处使用了。</font>自己以前没有想到，看来经验不足啊！</font> <div> </div> <div> </div> <div> </div> <div> <p><font size="3" face="Times New Roman"> <font size="3" face="Times New Roman"><font size="3" face="Times New Roman"> </font></font></font></p> </div> </div> <img src="http://blog.rongzhiwang.com/baicaps/aggbug/149.aspx" width="1" height="1" /> baicaps http://blog.rongzhiwang.com/baicaps/archive/2010/06/10/javascriptdocument.getelementbyid.aspx Thu, 10 Jun 2010 01:50:58 GMT http://blog.rongzhiwang.com/baicaps/comments/149.aspx http://blog.rongzhiwang.com/baicaps/archive/2010/06/10/javascriptdocument.getelementbyid.aspx#feedback 2 http://blog.rongzhiwang.com/baicaps/comments/commentRss/149.aspx http://blog.rongzhiwang.com/baicaps/services/trackbacks/149.aspx