解决从XXX开始，屏蔽以后的字符串的三种方法

<SCRIPT LANGUAGE="vbScript">

<!--

str="用户名：xxx<BR>密码：ddd"

str1="d"

function restr(str, str1)

if instr(str, str1) = 0 then exit function

restr = left(str, instr(str, str1) - 1 + len(str1))

end function

document.write restr(str, str1)

//-->

</SCRIPT>

<%

str="用户名：xxx<BR>密码：ddd"

for i=0 to len(str)

response.write instr(left(str,i),"<BR>")

if instr(left(str,i),"<BR>")>=1 then

response.write left(str,i)

exit for

end if

next

%>

text = "点击图片可将其插入文章内容中"

start = instr(text,"图片")+2

text = left(text,start)