<script type=
"text/javascript"
>
function
check(v){
var
regex =
new
RegExp(
"^([\u4E00-\uFA29]|[\uE7C7-\uE7F3]|[a-zA-Z0-9_]){1,20}$"
);//不包含“-”
//var
regex =
new
RegExp(
"^([\u4E00-\uFA29]|[\uE7C7-\uE7F3]|[a-zA-Z0-9_-]){1,20}$"
);//包含“-”
var
res = regex.test(v);
if
(res==
true
){
alert(
"包含中英文字母或下划線"
);
return
true
;
}
else
{
alert(
"不包含中英文字母或下划線"
);
return
false
;
}
}
check(
'博客園90_qwe'
);