Complete validations for email id

Hello
I am going through the validations in a form
I would like to know the validations to be considered in writing javascript for email id
so would u plz help me in writing the necessary functions
thanq

This is the code for that:

<html>
<head>
</head>
<body>
Email Id:
<input type="text"><br>
<input type="button" value="submit">
</body>
</html>

Apr 6 '07 #1

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1565

mrhoo

428

256MB

To catch common typing errors, check the field for the basics.
/^[a-z]\w+@[a-z][^\.]+\.[a-z]\w+$/i

Expand|Select|Wrap|Line Numbers

 <html>

<head>

<title>email</title>

<script type="text/javascript">

function valEmail(){

    var who=document.getElementsByName('emailIn')[0];

    var what= who.value;

    if(/^[a-z]\w+@[a-z][^\.]+\.[a-z]\w+$/i.test(what))return form.submit();

    else{

        var pa=who.parentNode;

        pa.firstChild.data="Valid Email Required:";

        pa.style.backgroundColor='red';

        pa.style.color="white";

        who.focus();

        who.select();        

    }

    return false;

}

onload=function(){

    document.forms[0].onsubmit=function(){return valEmail()};

}

</script>

</head>

<body>

<form action='' method='' >

<p>

<lable style="padding:1ex" >Email Id: 

<input type="text" name="emailIn" value="" ></label>

<input type="submit" value="Submit" >

</p>

</form>

</body>

</html>

Apr 6 '07 #2

mrhoo

428

256MB

Sorry- edit this line:(form should be form[0]);

if(/^[a-z]\w+@[a-z][^\.]+\.[a-z]\w+$/i.test(what))return form[0].submit();

Apr 6 '07 #3

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