1 )Write a script to keep track of number of times the web page
has been accessed
(use $_COOKIE).
coo8.html
<html>
<body>
<form method=post action=coo8.php>
Enter name<input type=text name=nm><p>
<input type="submit" value="click me">
</form>
</body>
</html>
coo8.php
<?php
$name = 'visitCount';
if(!isset($_COOKIE[$name])){
$_COOKIE[$name] = 0;
}
$_COOKIE[$name] = 1+(int) max(0,$_COOKIE[$name]);
$result = setcookie($name,$_COOKIE[$name]);
if(!$result) {
throw new RuntimeException("Failed
to set cookie \"$name\"");
}
echo "Hello <b>".$_POST['nm']."</b><br>";
echo"<br/> You have accessed the page <b>".$_COOKIE[$name]."</b>
times<br>";
echo"<br/><a href='coo8.html'>coo8.html</a>";
?>
2)Write Ajax program to carry out validation for ausername entered in textbox. If the textbox is blank, print ‘Enter username’.If the number of characters is less than three, print’ Username is too short’.If value entered is appropriate the print ‘Valid username’.
Slip8.html
<html>
<head>
<script
type="text/javascript">
function valu(str)
{
var ob1=false;
ob1=new
XMLHttpRequest();
if(str=="")
document.getElementById("a").innerHTML="Username
Should not be Empty";
else if(str.length<=3)
document.getElementById('a').innerHTML="lenght
is too short";
else
document.getElementById('a').innerHTML="valid username";
}
</script>
</head>
<body>
<form>
<table
align="center">
<tr>
<td><b>Enter
Username : </b></td>
<td><input
type=text name=u_name id=u_name></td>
</tr>
<tr>
<td></td>
<td><font
color="red" size=3><span
id=a></span></font></td>
</tr>
<tr>
<th
colspan="2"><input type=button value=submit
onclick="valu(form.u_name.value)"></th></tr>
</table>
</form>
</body>
</html>
