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Print - E-mail Address Validation - JavaScriptBank.com

Full version: jsB@nk » Email » E-mail Address Validation
URL: http://www.javascriptbank.com/email-address-validation.html

E-mail Address Validation © JavaScriptBank.comThis JavaScript verifies the given value as a possible valid e-mail address.

Full version: jsB@nk » Email » E-mail Address Validation
URL: http://www.javascriptbank.com/email-address-validation.html



JavaScript
<script type="text/javascript"><!-- Begin/* Created by: Anita Sudhakar :: http://www.smartwebby.com/DHTML/email_validation.asp */function echeck(str) {  var at="@"  var dot="."  var lat=str.indexOf(at)  var lstr=str.length  var ldot=str.indexOf(dot)  if (str.indexOf(at)==-1){     alert("Invalid E-mail ID")     return false  }  if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){     alert("Invalid E-mail ID")     return false  }  if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){      alert("Invalid E-mail ID")      return false  }   if (str.indexOf(at,(lat+1))!=-1){      alert("Invalid E-mail ID")      return false   }   if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){      alert("Invalid E-mail ID")      return false   }   if (str.indexOf(dot,(lat+2))==-1){      alert("Invalid E-mail ID")      return false   }   if (str.indexOf(" ")!=-1){      alert("Invalid E-mail ID")      return false   }   return true          }function ValidateForm(){  var emailID=document.frmSample.txtEmail    if ((emailID.value==null)||(emailID.value=="")){    alert("Please Enter your Email ID")    emailID.focus()    return false  }  if (echeck(emailID.value)==false){    emailID.value=""    emailID.focus()    return false  }  return true }// End --></script><!--    This script downloaded from www.JavaScriptBank.com    Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->


HTML
<form name="frmSample" method="post" action="#" onSubmit="return ValidateForm()">  <p>Enter an E-mail Address :     <input type="text" name="txtEmail">      <input type="submit" name="Submit" value="Submit">  </p></form><!--    This script downloaded from www.JavaScriptBank.com    Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->