1. Write a PHP script using AJAX concept, to check user name and password are valid or Invalid (use database to store user name
and password). (29)
Html file :
<html>
<head>
<script type="text/javascript">
function validate()
{
uname=document.getElementById('uname').value;
pwd=document.getElementById('pwd').value;
}
</script>
</head>
<body>
<form action="slip_29-1.php" method=get>
Enter UserName<input type=text name=uname id=uname><span id=a></span><br>
Enter Password<input type=password name=pwd id=pwd><br>
<input type=SUBMIT value=SUBMIT onClick=validate()>
</form>
</body>
</html>
Php file :
<?php
$uname=$_GET['uname'];
$password=$_GET['pwd'];
$con=mysql_connect("localhost","root","") or die("I cannot connect");
$d=mysql_select_db("slip29",$con);
$q=mysql_query("select * from login");
$n=0;
while($row=mysql_fetch_array($q))
{
if($row[0]==$uname && $row[1]==$password)
$n=1;
}
if($n==0)
echo "invalid username or password";
?>
Html file :
<html>
<head>
<script type="text/javascript">
function Addition()
{
var ob=false;
ob=new XMLHttpRequest();
var no1=document.getElementById("no1").value;
var no2=document.getElementById("no2").value;
ob.open("GET","Que25.php?num1="+no1+"&num2="+no2);
ob.send();
ob.onreadystatechange=function()
{
if(ob.readyState==4 && ob.status==200)
document.getElementById("add").innerHTML=ob.responseText; }
