January 28th, 2009, 03:58 PM
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Contributing User
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Join Date: Jul 2008
Location: Cleveland, Ohio, USA
Posts: 483
Time spent in forums: 5 Days 17 h 47 m 21 sec
Reputation Power: 2
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I always use the following:
PHP Code:
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 Address")
return false
}
if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
alert("Invalid E-mail Address")
return false
}
if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
alert("Invalid E-mail Address")
return false
}
if (str.indexOf(at,(lat+1))!=-1){
alert("Invalid E-mail Address")
return false
}
if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
alert("Invalid E-mail Address")
return false
}
if (str.indexOf(dot,(lat+2))==-1){
alert("Invalid E-mail Address")
return false
}
if (str.indexOf(" ")!=-1){
alert("Invalid E-mail Address")
return false
}
return true;
}
So with your form, you would use:
PHP Code:
<html>
<head>
<script>
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 Address")
return false
}
if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
alert("Invalid E-mail Address")
return false
}
if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
alert("Invalid E-mail Address")
return false
}
if (str.indexOf(at,(lat+1))!=-1){
alert("Invalid E-mail Address")
return false
}
if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
alert("Invalid E-mail Address")
return false
}
if (str.indexOf(dot,(lat+2))==-1){
alert("Invalid E-mail Address")
return false
}
if (str.indexOf(" ")!=-1){
alert("Invalid E-mail Address")
return false
}
return true;
}
function ValidateForm() {
var elem=document.form2.email;
if (echeck(elem)==false) {
return false;
}
return true;
}
</script>
</head>
<body>
<form name="form2" method="post" action="regcomplete.php" onsubmit="return ValidateForm();">
<p>Name:<input type="text" name="name">
<br>
Email:<input type="text" name="email">
<br>
Retype your Email:<input type="text" name="remail">
<br>
Create a password:<input type="password" name="password">
<br>
<input type="submit" name="Submit" value="Sign me up!">
</p></form>
</body>
</html>
__________________
Sir, a desire of knowledge is the natural feeling of mankind; and every human being, whose mind is not debauched, will be willing to give all that he has to get knowledge.
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