Javascript problem in validation

[stary]

Hi all,

I'm using javascript to validate all the fields in a form before calling another php form for processing.

My problem here is that when i call the form which uses javascript, the fields could not be validated and before anything is validated, the form would jump in straight to the php processing page.

I understand that javascript is on the client-side processing..but why izzit that it could not validate anything and jump straight into the php form for processing?

Thanks in advance for any advice!

Cheers!
StaRy

[lentin64]

What is your code?

[stary]

I'm juz wondering whether ther's anyway to stop the form from processing so dat user could input the correct data validation, let it process by javascript and post the action to another php form if user input is correct?

[Anon]

Yes, it is possible, but if you want help we want source code. Just my two cents.... Dont use java to validate forms, especially if it is important. Just validate the form with php.

[stary]

Hi all,
basically the source code which had been causing me problem is below. When i try to call the checkMail() below, the page would not stop to check. For example, if i enter the format of an email address wrongly, javascript would not set the focus back to the email field textbox but just display the alert and post the data to the subsequent php form.
What's happening? Thanks again for any suggestions.

function Form_Validate()
{
//looping thru' name, email, tel fields to determine whether user had input information
for (i=0;i<3;i++)
{
box = document.input_all.elements;
if (!box.value)
{
alert('You haven\'t filled in ' + box.name + '!')
box.focus()
return false
}

if(i == 2)
{
checkMail()
}

}

return true
}


function checkMail()
{
var x = document.input_all.email.value;
var filter = /^{([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9])+$/;}

if (!filter.test(x))
{
alert('Incorrect email address. Please re-enter')
x.focus()
return false
}
return true
}


cheers!

[steved]

If you are calling the validation routine from within the form tag, you need to include a "return" before you call it. That way your return false will stop the submit process.

Like this:

<form method=post name=Form1 action="nextprogram.php" onSubmit="return Form_Validate();">