JavaScript ÅжÏÉÏ´«ÎļþÀàÐÍ
function
Check_FileType(str)
{
var
pos
=
str.lastIndexOf(
"
.
"
);
var
lastname
=
str.substring(pos,str.length) //´Ë´¦Îļþºó׺ÃûÒ²¿ÉÓÃÊý×鷽ʽ»ñµÃstr.split(".")
if
(lastname.toLowerCase()
!=
"
.jpg
"
&&
lastname.toLowerCase()
!=
"
.gif
"
)
{
alert(
"
ÄúÉÏ´«µÄÎļþÀàÐÍΪ
"
+
lastname
+
"
£¬Í¼Æ¬±ØÐëΪ.jpg,.gifÀàÐÍ
"
);
document.myform.pic.focus();
return
false
;
}
else
{
return
true
;
}
}
http://www.cnblogs.com/SList/archive/2005/11/09/272164.html
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Struts Validator Framework provides an easy-to-use mechanism for performing client-side validation. It's very useful to validate some fields on the client-side before sending the data to the server for processing. By this way we can ensure that the data send to the server is valid. Performing valida ......