Question

asp程序 js怎样限制添加的歌曲地址 后缀名为mp3? 帮忙改下谢谢

end if

rs.addnew
if trim(request.form("musicname"))="" then
response.write "<script language=javascript>"
response.write "alert('请填写名称');"
response.write "</script>"
response.write "<script language=javascript>location='javascript:history.back(1)'</script>"
Response.End
end if
if trim(request.form("file"))="" then
response.write "<script language=javascript>"
response.write "alert('请填写歌曲地址');"
response.write "</script>"
response.write "<script language=javascript>location='javascript:history.back(1)'</script>"
Response.End
end if
rs("musicname")=trim(request("musicname"))
rs("singer")=trim(request("singer"))
rs("file")=trim(request("file"))
rs("username")=trim(request("user"))
rs.update
rs.close
response.write "<script language=javascript>"
response.write "alert('添加成功！继续添加？');"
response.write "</script>"
response.write "<script language=javascript>location='?user="&user&"'</script>"
Response.End
不好意思 发的时候没注意

vbs???
下面朋友给我的我融合不了

end if
if trim(request.form("file"))="" then
response.write "<script language=javascript>"
response.write "alert('请填写地址以.MP3为结尾的歌曲地址');"
response.write "</script>"
response.write "<script language=javascript>location='javascript:history.back(1)'</script>"
Response.End

这段怎么改??? 添加的歌曲地址 后缀名一定要为mp3? 其他格式不可以加..
加错的话,....在提交之后弹出提示

Answer 1

将你给的代码:
if trim(request.form("file"))="" then
response.write "<script language=javascript>"
response.write "alert('请填写地址以.MP3为结尾的歌曲地址');"
response.write "</script>"
response.write "<script language=javascript>location='javascript:history.back(1)'</script>"
Response.End

改成如下代码:

Dim music
music = split(request.form("file"),".")

if LCase(music(ubound(music)))<>"mp3" then '判断后缀是否为mp3
response.write "<script language=javascript>"
response.write "alert('请填写地址以.MP3为结尾的歌曲地址');"
response.write "</script>"
response.write "<script language=javascript>location='javascript:history.back(1)'</script>"
Response.End

本地调试通过

Answer 2

<script>
var url="c:\dd.mp3"
if(url.lastIndexOf(".mp3")==4||url.lastIndexOf(".MP3")==4){
alert("成功!")
}else{
alert("失败!")
}
</script>

//补充
url="<%=request.form("file")%>"就可以了啊

Answer 3

据我了解· 你说的那样是不可能的·· 如有疑问请点此处. https://gss0.baidu.com/7LsWdDW5_xN3otqbppnN2DJv/328070956/pic/item/8b4908edb4382f5b79f05547.jpg

Answer 4

不好意思 发的时候没注意

js怎样判断添加的歌曲地址
后缀名一定要为mp3?
在提交之后弹出提示
否则不于添加
帮忙改下谢谢

Answer 5

你是说在提次之前还是在提交之后再验证？你自己都不描述清楚？别人怎么么帮你啊？