text box accepting email address only

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hi, I would like to know the code for java script accepting only email address only in a text box, Helps me in my academic project

Posted 30-Jan-12 18:23pm

anil.tuta

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koolprasad2003 · Answer 1 · 2012-01-30T18:27:00

Solution 2

Yes you can use Javascript and Regex to accomplish your task,
here is an example

JavaScript

function validateEmail(elementValue)
{   
   var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;   
   return emailPattern.test(elementValue);   
}

above function will return TRUE/FALSE depend upon result.

Posted 30-Jan-12 18:27pm

koolprasad2003

Comments

Tech Code Freak 31-Jan-12 0:53am

5up!

CRDave1988 · Answer 2 · 2012-01-30T18:27:00

C#

function validate(form_id,email) {

   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.forms[form_id].elements[email].value;
   if(reg.test(address) == false) {

      alert('Invalid Email Address');
      return false;
   }
}

XML

<form id="form_id" method="post" action="action.php" onsubmit="javascript:return validate('form_id','email');">

   <input type="text" id="email" name="email" />

   <input type="submit" value="Submit" />
</form>

Chandrakant_Bhanu · Answer 3 · 2012-01-30T18:30:00

Solution 4

Simli use regular expression control for this

Posted 30-Jan-12 18:30pm

Chandrakant_Bhanu

Neha Thanka · Answer 4 · 2012-01-30T18:32:00

Solution 5

Hi,

cross-browser-javascript-aspnetc-email[^]

validating-e-mail-addressusing[^]

How-to-control-ASP-NET-Validator-Controls-Client-Side-validation-from-JavaScript[^]

Posted 30-Jan-12 18:32pm

Neha Thanka

Vijay Radia · Answer 5 · 2012-01-30T20:15:00

C#

function isEmail() {
    if (window.parent.isMouseClicked) return;
    var regEmail, strValue;
    strValue = document.getElementById("txtEmail").value;
    regEmail =/^([A-Za-z]{1})([A-Za-z0-9_.\-]*)([A-Za-z0-9]{1})(@)([A-Za-z0-9]{1})([A-Za-z0-9_.\-]*)([A-Za-z0-9]{1})(\.)([A-Za-z]{1})([A-Za-z]*)$/

    strValue = document.getElementById("txtEmail").value;
    if (document.getElementById("txtEmail").value == "") return true;

    if(! regEmail.test(strValue)) {
        alert("Invalid Email Address.\n\n Please enter correct and complete EMail Address.");
        document.getElementById("txtEmail").value=""
        document.getElementById("txtEmail").focus();
        return false;
    }
    return true;
}

Add Onchange event to this function.

C#

<asp:textbox id="txtEmail" runat="server" onchange="return isEmail(this);" xmlns:asp="#unknown"></asp:textbox>

idhasitha · Answer 6 · 2012-01-30T18:25:00

VB

FirstString = "me@me.com"
SecondString = "@"
position = InStr(FirstString, SecondString)
If position = 0 Then
MsgBox "Not a Valid email address: There was No @ Sign"
End If



Dim Email As String
Dim DotCom As String

Email = "me@me.con"
DotCom = Email.Substring(Email.Length - 4, 4)

If DotCom = ".com" Then
MsgBox("Ends in Dot Com")
Else
MsgBox("Doesn't End in Dot Com")
End If