【www.bbyears.com--php函数】
代码如下
"-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">"http://www.w3.org/1999/xhtml">"Content-Type" content="text/html; charset=utf-8" />Test <script type="text/javascript" language="javascript" >word">function showFace(unipcn,value){}word">var isFunction =false;try{ //这里的代码需要用try一下,因为当showFace为定义时会抛出异常 isFunction = typeof(eval('showFace'))=="function";}catch(e){}if(isFunction) { alert('showFace is a Function!');}else{ alert('showFace is not a Function!');}
运行效果图如下：
