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Javascript email check example.
Posted by Assaf on Nov 18 2007 @ 13:17 :: 1059 unique visits
<html dir="ltr"><head>
<title> Email Checking </title>
<script language="JavaScript">
function CheckVaild(FormName) {
var length = document[FormName].email.value.length;
var counter = 0;
var MSG = "";
for(i=0;i<length;i++) {
if( (document[FormName].email.value.charAt(i) < 'a' || document[FormName].email.value.charAt(i) > 'z') &&
(document[FormName].email.value.charAt(i) < 'A' || document[FormName].email.value.charAt(i) > 'Z') ) {
if(document[FormName].email.value.charAt(i) != '@') {
if(MSG.length == 0)
MSG = MSG + "Email is not in english\n";
}
else
if(i > 0 && i < length-1)
counter++;
}
}
if( document[FormName].email.value.length < 2)
MSG = MSG + "Email is too short\n" ;
if(counter != 1)
MSG = MSG + "Email is not vaild\n";
if(MSG.length>0)
alert(MSG);
else
alert("Email is vaild");
}
</script>
</head>
<body>
<h2> Email Check </h3>
<br/> <br />
<form name="E-FORM">
Email:
<input type="text" name="email" size="20" />
  
<input type="button" value="Check" onclick="CheckVaild('E-FORM')" />
</form>
</body>
</html>
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1. On Dec 27 2007 @ 14:54 guest wrote:
Why not using regular expression? Would be easier, shorter and more obviously what the code actually does.Moreover "foo@bar.com" does not evaluate to a valid email address with your code.