Join和Implode 链接函数

二者可以实现同样的功能 

语法：

Join(sourceArray, [delimiter])

Implode(sourceArray, [delimiter])

Concatenates all members of an Array of Strings and returns a string. Elements of the Array are separated by a delimiter, if provided, or the space character (" ").

如：

doc.HtmlBody = doc.HtmlBody(0) + {<td><a href="/}+doc.DBPath(0)+{/0/}+pdoc.UniversalID+{?OpenDocument&Login" target="_self">}+Join(pdoc.bu,"<br>")+{</a></td>}   

是使用换行符来隔开各元素