client side validation

Following Functions are used to validate the Data in client side .Following Function are interdependant.

function IsEmpty(ctrl,mess)
It accepts 2 arguments, namely ctrl and mess
ctrl – Name of the control name (Text box).
mess – Message ( Enter First name)
It returns the Boolean values
If the condition is satisfied it returns True otherwise false





function isEmailAddr(email)
function InvalidEmail(ctrl,mess)
function IsEmpty(ctrl,mess)
function validEmail(formField,fieldLabel,required)
function validNum(formField,fieldLabel,required)
function validRequired(formField,fieldLabel)
function validDate(formField,fieldLabel,required)
function allDigits(str)
function inValidCharSet(str,charset)



function isEmailAddr(email)
{
var str = email;
var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; // not valid
var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/; // valid
if (!reg1.test(str) && reg2.test(str)) { // if syntax is valid
return true;
}
return false;
}

function InvalidEmail(ctrl,mess)
{
var str = ctrl.value;
var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; // not valid
var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/; // valid
if (!reg1.test(str) && reg2.test(str)) { // if syntax is valid
return false;
}
alert(mess);
ctrl.focus();
return true;
}

function IsEmpty(ctrl,mess)
{
var name=ctrl.value;
for(i=0;i {
if (name.charAt(i) !=" ")
return false;
}

alert(mess);
ctrl.focus();
return true;
}

function validEmail(formField,fieldLabel,required)
{
var result = true;

if (required && !validRequired(formField,fieldLabel))
result = false;

if (result && ((formField.value.length < 3) || !isEmailAddr(formField.value)) )
{
alert("Please enter a complete email address in the form: yourname@yourdomain.com");
formField.focus();
result = false;
}

return result;

}



function validNum(formField,fieldLabel,required)
{
var result = true;

if (required && !validRequired(formField,fieldLabel))
result = false;

if (result)
{
if (!allDigits(formField.value))
{
alert('Please enter a number for the "' + fieldLabel +'" field.');
formField.focus();
result = false;
}
}

return result;
}

function validRequired(formField,fieldLabel)
{
var result = true;

if (formField.value == "")
{
alert('Please enter a value for the "' + fieldLabel +'" field.');
formField.value=Trim(formField.value);
file://alert('d');
formField.focus();
result = false;
return result;
}

if (IsEmpty(formField,"Please enter a value for "+fieldLabel))
{
formField.value=Trim(formField.value);
result = false;
}

return result;


}

function validDate(formField,fieldLabel,required)
{
var result = true;

if (required && !validRequired(formField,fieldLabel))
result = false;

if (result)
{
if (isDate(formField.value)==false)
{
result=false;
// alert('Please enter a date in the format MM/DD/YYYY for the "' + fieldLabel +'" field.');
formField.focus();
}
}

return result;
}
function allDigits(str)
{
return inValidCharSet(str,"0123456789");
}

function inValidCharSet(str,charset)
{
var result = true;

// Note: doesn't use regular expressions to avoid early Mac browser bugs
for (var i=0;i if (charset.indexOf(str.substr(i,1))<0)
{

result = false;
break;
}

return result;
}