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Ajax Registration Program
Posted on: November 23, 2006 at 12:00 AM

In this Ajax Registration program you will learn how to validate the user registration through ajax call and then display the alert massage if no values are provided in the username and password fields.

Ajax Registration Program

When a user input user Id and password and press Register button , method 'call_Register()' will make ajax call. If the value returned from the server is "yes" the alert box will show 'Welcome for Register' otherwise it will show ' the Invalid Id/password please enter the Id/password!'.

Example of Ajax Registration program:

<html>

<head>

<title>Ajax Registratiion program</title>

<script language="javascript">

function postRequest(strURL){

var xmlHttp;

if(window.XMLHttpRequest){ // For Mozilla, Safari, ...

var xmlHttp = new XMLHttpRequest();

}

else if(window.ActiveXObject){ // For Internet Explorer

var xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");

}

xmlHttp.open('POST', strURL, true);

xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

xmlHttp.onreadystatechange = function(){

if (xmlHttp.readyState == 4){

updatepage(xmlHttp.responseText);

}

}

xmlHttp.send(strURL);

}
function updatepage(str){

if(str == "no"){

   alert("Invalid Id/password! Please fill Currect Id/password")

}
   else{

alert("welcome for register !");

}

   }

function call_register(){

var login_id =document.reg.uid.value;

var password=document.reg.passwd.value;

var url = "Register.php?loginid="+login_id+"&password="+password+"";

postRequest(url);

}

</script>

</head>

<body>

<center>

<form name="reg">

<table border="1" width="30%">

<tr>

   <td align="center" colspan="2"> <font face="Monotype" size="5">Registration</font></td>

</tr>

<tr>

<td> Login id: </td> <td> <input type="text" name="uid" size="20"></td>

</tr>

<tr>

<td> Password: </td><td><input type="password" name="passwd" size="20" /></td>

</tr>

<tr>

<td align="center" colspan="2"> <input type="submit" value="Register" onClick="return call_register()"

style="background-color:#FFE9D2;color:#0000FF; border-color:#99CC33"> </td>

</tr>
</table>

</form>

</body>
</html>

Here this code support the Register.php for Ajax Registration program:

<?
$loginid=$_GET["loginid"];
$password=$_GET["password"];
if( $password == "" || $loginid == "" || ($loginid == "" && $password == "") ){
echo "no";
}
else{
echo "yes";
}
?>

Try the Example online

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