Javascript to validate all form fields when onSubmit

Javascript to validate all form fields when onSubmit

function checkrefereremail(){
 //var testresults
 var nam=document.getElementById('name').value;
 var mob=document.getElementById('contactno').value;
 var str=document.getElementById('emailid').value;
 var anum=/(^\d+$)|(^\d+\.\d+$)/ // integer validation
var flag=1;
 var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i // email validation
 $('#namemsg').html('');$('#mobmsg').html('');$('#emailmsg').html('');$('#captchamsg').html('');
 if(nam == '')
 {
 document.getElementById("namemsg").innerHTML = "Please input a valid name!";

 flag++;
 }
 if (anum.test(mob) == false)
 {
 document.getElementById("mobmsg").innerHTML = "Please input a valid mobile no!";
 flag++;
 }
 if(filter.test(str) == false){
 document.getElementById("emailmsg").innerHTML = "Please input a valid email address!";
 flag++;
 }else
 {
 return Captcharesult()
 return true;
 }

 }
</script>

Refer mydala view source:
<script>
function user()
{
var isflag=1;
$('#emailidErr').html('');$('#cpasswordErr').html('');$('#passwordErr').html('');$('#mobilenoErr').html('');$('#dobErr').html('');$('#tcboxErr').html('');$('#captchaErr').html('');
if($('#emailid').val()=='')
 {
 $('#emailid').addClass("red-border");
 $('#emailidErr').html('Please Enter Email Id');
 isflag++;
 }else{
 var emailFilter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i; // Both work same:and are userful /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/
 if(!(emailFilter.test($('#emailid').val())))
 {
 $('#emailid').addClass("red-border");
 $('#emailid').val('');
 $('#emailidErr').html('Please Enter Valid Email Id');
 isflag++;
 }
 }
 if($('#password').val()=='')
 {
 $('#password').addClass("red-border");
 $('#passwordErr').html('Please Enter Password');
 isflag++;
 }else{
 var Password = $('#password').val();
 if(Password.length<6)
 {
 $('#passwordErr').html('Please Enter Six digit in Password');
 $('#password').addClass("red-border");
 isflag++;
 }
 if(Password!=$('#cpassword').val())
 {
 $('#cpassword').addClass("red-border");
 $('#cpasswordErr').html('Please Enter Same Password in Confirm Password');
 isflag++;
 }
 }

 if($('#mobileno').val()!='' )
 {
 if(!($('#mobileno').val().match(/^[0-9]+$/)))
 {
 $('#mobileno').addClass("red-border");
 $('#mobilenoErr').html('Please Enter Numeric Value in Mobile Number!');
 isflag++;
 }

 var Mobile=$('#mobileno').val();
 if ((Mobile.length<10))
 {
 $('#mobilenoErr').html('Please Enter Ten digit in Mobile Number!');
 $('#mobileno').addClass("red-border");
 isflag++;
 }
 if ((Mobile.length>10))
 {
 $('#mobilenoErr').html('Please Enter Ten digit in Mobile Number!');
 $('#mobileno').addClass("red-border");
 isflag++;
 }
 }
 else
 {
 $('#mobileno').addClass("red-border");
 $('#mobilenoErr').html('Please Enter Your Mobile Number');
 isflag++;
 }
 if($('#cityid').val()=='')
 {
 $('#cityid').addClass("red-border");
 $('#cityidErr').html('Please Select City');
 isflag++;
 }
 if($('#date_dd').val()=="" && $('#date_mm').val()=="" && $('#date_yy').val()=="")
 {
 if($('#date_dd').val()==""){$('#date_dd').addClass("red-border");}
 if($('#date_mm').val()==""){$('#date_mm').addClass("red-border");}
 if($('#date_yy').val()==""){$('#date_yy').addClass("red-border");}
 $('#dobErr').html('Please Select Date of Birth!');
 isflag++;
 }


 if($('#b_pincode').val()!='' )
 {
 if(!($('#b_pincode').val().match(/^[0-9]+$/)))
 {
 $('#b_pincode').addClass("red-border");
 $('#b_pincodeErr').html('Please Enter Numeric Value in Zip Code!');
 isflag++;
 }

 var zipcode=$('#b_pincode').val();
 if ((zipcode.length<6))
 {
 $('#b_pincodeErr').html('Please Enter six digit in Zip Code!');
 $('#b_pincode').addClass("red-border");
 isflag++;
 }
 if ((zipcode.length>6))
 {
 $('#b_pincodeErr').html('Please Enter six digit in Zip Code!');
 $('#b_pincode').addClass("red-border");
 isflag++;
 }
 }

 if($('#captcha').val()==''){
 $('#captcha').addClass("red-border");
 $('#captchaErr').html('Please Enter Verification code');
 isflag++;
 }

 if(document.form_user.tcbox.checked == false)
 {
 $('#tcbox').addClass("red-border");
 $('#tcboxErr').html('Please accept the T&C.');
 isflag++;
 }

 if(isflag > 1){
 $('#loginerror').show();
 return false;
 }
 document.getElementById('form_user').submit();
 document.form_user.submit();
}
</script>

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