Is it working foe email validation

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JavaScript

var x = document.getElementById("<%= txtEmailAddress.ClientID%>").value;
            var atpos = x.indexOf("@");
            var dotpos = x.lastIndexOf(".");
            var substr = x.substring(atpos+1, dotpos);
          
            if ((atpos < 1 || dotpos < atpos + 2 || dotpos + 2 >= x.length)||(substr!="gmail")) {
                document.getElementById("<%= txtEmailAddress.ClientID%>").value = "";
                document.getElementById("<%= lblEmailErrMsg.ClientID%>").innerHTML = "Invalid Email";
                
                return false;
            }
            else {
                document.getElementById("<%= lblEmailErrMsg.ClientID%>").innerHTML = "";
            }

Posted 31-Jul-14 21:49pm

Mani Kumar Maddu

Updated 31-Jul-14 22:41pm

Dilan Shaminda

v2

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Comments

Nirav Prabtani 1-Aug-14 3:53am

what is an isuue?

2 solutions

Solution 1

Well...it's pretty poor.
What if I enter

me@gmail.my.house@home

Or similar?
Is that valid?
Because it passes your tests!

Start with something like this: Email Validation in JavaScript[^] instead of a hack'n'slash job on the W3Schools example you got from here: http://www.w3schools.com/js/js_form_validation.asp[^]

Posted 31-Jul-14 22:04pm

OriginalGriff

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**Nirav Prabtani** · Accepted Answer · 2014-07-31T23:49:00

try this.. :)

JavaScript

function ValidateEmail(inputText)  
{  
var mailformat = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;  
if(inputText.value.match(mailformat))  
{  
document.form1.text1.focus();  
return true;  
}  
else  
{  
alert("You have entered an invalid email address!");  
document.form1.text1.focus();  
return false;  
}  
}

HTML

HTML

<html lang="en">  
<head>  
<meta charset="utf-8">  
<title>JavaScript form validation - checking email</title>  
<link rel="stylesheet" href="form-style.css" type="text/css" />        
</head>  
<body onload='document.form1.text1.focus()'>  
<div class="mail">  
<h2>Input an email and Submit</h2>  
<form name="form1" action="#">   
<ul>  
<li><input type='text' name='text1'/></li>  
<li> </li>  
<li class="submit"><input type="submit" name="submit" value="Submit" onclick="ValidateEmail(document.form1.text1)"/></li>  
<li> </li>  
</ul>  
</form>  
</div>  
<script src="email-validation.js"></script>  
</body>  
</html>

Reference.. :)

JavaScript : HTML Form - email validation[^]