Hi wise monks...
This is my first posting in perlmonks.com :-). This is not full fledged perl but focus is on javascript.Hope this code will be helpful for some who wants to validate HTML form by generating javascript through perl.
Any optimization/suggestion will be helpful...
The basic idea is to pass the HTML form name followed by
$required which accepts the required text fields delimited by commas.(i.e. the texbox names which should not be empty. ex: userid,password)
$password: gets two password fields including the password confirmation textbox delimited by colon.
Similarly select boxes, radio and checkboxes fieldnames are passed by comma delimiters.
$chkforword is used to validate the field value for a single word which accepts only word characters \w... for example:userid field
sub scripts
{
($formname,$required,$password,$emailchk,$chkforword,$selection,$r
+adio,$checkbox) = @_;
@required = split(/,/,$required);
@selection = split(/,/,$selection);
@radio = split(/,/,$radio);
@checkbox = split(/,/,$checkbox);
my $reqfields = "";
foreach(@required)
{
$reqfields.= "if(valid){chk(document.$formname.$_,\"Please
+ specify value for this field\");}";
}
if($password ne "")
{
($pwd1,$pwd2)=split(/:/,$password);
$password="
if(valid){chk(document.$formname.$pwd1,\"Please sp
+ecify your Password\");}
if(valid){chk(document.$formname.$pwd2,\"Please co
+nfirm your Password\");}
if(valid){
if(document.$formname.$pwd1.value == document.
+$formname.$pwd2.value)
valid=true;
else
{
alert(\"Please Check your password\");
var cp=document.$formname.$pwd2;
cp.value=\"\";
cp.focus();
valid=false;
}
}";
}
if($emailchk ne "")
{
@emails = split(/,/,$emailchk);
$emailchk="";
foreach(@emails)
{
$emailchk.="
var e=document.$formname.$_;
if(valid){
var strS=document.$formname.$_.value;
var blnB=/^\\w+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]
+{2,3}|[0-9]{1,3})(\\]?)\$\/.test(strS);
if(blnB) { valid=true;}
else { alert(\"Please specify valid Email-Id\");valid=
+false;e.focus();}}";
}
}
if($chkforword ne "")
{
$chkforword="
if(valid){
var thischk = document.$formname.$chkforword;
var chkW = /^(\\w+[^\\s+])+\$/.test(thischk.value)
+;
if(chkW){valid =true;}
else{alert(\"Please specify valid value\");valid=f
+alse;thischk.focus();}
}
";
}
if($selection[0] ne "")
{
$selectfn="
function chksel(fieldvalue, msg)
{
if(fieldvalue==\"\")
{
alert(msg); valid = false;
}
}
";
foreach(@selection)
{
$selectchk.="if(valid){chksel(document.$formname.$_.option
+s[document.$formname.$_.selectedIndex].value,\"Please select an optio
+n from the list\");}"; }
}
if($radio[0] ne "")
{
$radiofn="
function rdchk(field,msg)
{
var exist=0;
if(field.checked) exist=1;
for(var i=0;i<field.length;i++){
if(field[i].checked)
{
exist=1;
break;
}
}
if(exist==0)
{
alert(msg);
valid=false;
}
}
";
foreach(@radio)
{
$radiochk.= "if(valid){
rdchk(document.$formname.$_,\"Please check one of the
+options\");}";
}
}
if($checkbox[0] ne "")
{
$chkfn="
function chek(field,msg)
{
var exist=0;
for(var i=0;i<field.length;i++){
if(field[i].checked)
{
exist=1;
break;
}
}
if(exist==0)
{
alert(msg);
valid=false;
}
}
";
foreach(@checkbox)
{
$checkchk.="if(valid){chek(document.$formname.$_,\"Please
+check one of the options\");}";
}
}
#print "Require fields: $reqfields";
print "
<script language='javascript'>
var valid=true;
function validate(frm)
{
valid=true;
$reqfields
$chkforword
$password
$emailchk
$selectchk
$radiochk
$chekchk
if(valid)
return(true);
else
return(false);
}
function chk(fieldvalue, msg)
{
var thisfield=fieldvalue;
fieldvalue=fieldvalue.value;
re = /\s+/ig;
fieldvalue = fieldvalue.replace(re, \"\");
if (fieldvalue == \"\")
{
if (valid)
{
alert(msg);
thisfield.value=\"\";
thisfield.focus();
valid = false;
return(1);
}
}
else
{
return(1);
}
}
$selectfn
$radiofn
$chekfn
</script>";
}
Example for calling the above subroutine in perl :
&scripts("formname","fname,lname","pwd:cpwd","email");
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