Newbie Validation Q

[superdude]

Hiya, i have this function:

function telephoneValidator(formObj)
{
if (formObj.Telephone.value.length < 10)
{
alert("Please enter a valid Telephone number. Telephone numbers should be at least 10 digits and no more than 18 digits in length.");
formObj.Telephone.focus();
return (false);
}
return (true);
}

i would like to validate it further by making sure there is a leading 0 (zero) at the beginning of the number (like 01256354212), the digits should not exceed 18, so far i've been able to validate only <10 and finally only numbers allowed.

Can anybody help? Thx

[Charles]

<input type="text" onchange="if (!/^0\d{9,17}$/.test(this.value)) {alert ('Please enter a valid phone number.'); this.value = '', this.focus()}">

[superdude]

thanx charles.... unfortunately i am more confused than before ... :o

what you have suggested is validated on the spot in the form, but i would like and prefer to keep it on a separate js file and i am wondering how to integrate what you have suggested in the function i already have done ... :confused:

would it be then:

function telephoneValidator(formObj)
{
if (formObj.Telephone.value (!/^0\d{9,17}$/))
{
alert("Please enter a valid Telephone number. Telephone numbers should be at least 10 digits and no more than 18 digits in length.");
formObj.Telephone.focus();
return (false);
}
return (true);
}

excuse my ignorance... :D

[Charles]

function telephoneValidator(formObj)
{
if (!/^0\d{9,17}$/.test(formObj.Telephone.value))
{
alert("Please enter a valid Telephone number. Telephone numbers should be at least 10 digits and no more than 18 digits in length.");
formObj.Telephone.focus();
return (false);
}
return (true);
}

[superdude]

charles thanx once again. it does make more sense the way you put it ;) this time though i get the alert message no matter how many digits i type in or whether i put the leading zero or not

in theory by putting at least 10 digits the alert prompt should not pop up, same if it is 18 digits and again same thing if the 10-18 digits start with 'zero'

any ideas what the prob could be?

[Charles]

It's hard to say what's wrong without seeing the rest of your work. That's why I gave you a version about which I was certain.

[superdude]

yes i know what you mean.

<form action="formMAA_end.php" method="post" name="maa_form" id="maa_form" onSubmit="return nameValidator(this) && companyValidator(this) && addressValidator(this) && cityValidator(this) && postcodeValidator(this) && telephoneValidator(this) && emailValidator(this)">

...(all other fields not here to keep the code short)...

<input name="Telephone" type="text" class="input" id="Telephone" size="11" maxlength="18">

<input type="submit" class="input" value="submit">

plus the function you know already ...

does it make sense?

[superdude]

i've just posted a test page maybe this helps

http://e-kom.port5.com/test.php

[superdude]

Solved! i forgot to add the bold characters when following your advice. My mistake! ...:rolleyes:

function telephoneValidator(formObj)
{
if (!/^0\d{9,17}$/.test(formObj.Telephone.value))
{
alert("Please enter a valid Telephone number. Telephone numbers should be at least 10 digits and no more than 18 digits in length.");
formObj.Telephone.focus();
return (false);
}
return (true);
}

thanks charles ;)