Here i am validating the IP address entered in a textbox through PHP.
$('#check_ip').click(function() {
var iptext = $('#Ip_Txt').val();
$.ajax({
type : "POST",
url : "mypage.php",
data : { iptext : iptext , testconn : "yes" },
success : function(data) {
}
});
});
And my PHP
if(isset($_REQUEST['testconn'])){
if ( $_SERVER['REQUEST_METHOD'] == "POST" )
{
$input = $_POST['iptext '];
if (preg_match( "/^(([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]).){3}([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/", $input))
{
echo "Valid IP";
}
else
{
echo "Invalid IP";
}
}
}
Everything is working fine. But i need to display echo Valid IP or Invalid IP in javascript alert after clicking the check_ip button.
You can catch what ever response in sent from the server after completion of the request sent via ajax in success property. So inside your ajax success add this
success : function(data) {
alert(data);
}
Inside alert you can give what ever text you want. If you want to check what message needs to be displayed then do necessary checking's inside the success and then give the necessary messages
success : function(data) {
if(condition)
alert('Some text');
else
alert('Some other text');
}
success: function(data) {
alert(data);
}
The data
is handling the echo from the backend so:
$('#check_ip').click(function() {
var iptext = $('#Ip_Txt').val();
$.ajax({
type : "POST",
url : "mypage.php",
data : { iptext : iptext , testconn : "yes" },
success : function(data) {
alert(data);
}
});
});
$.ajax({
type : "POST",
url : "mypage.php",
data : { iptext : iptext , testconn : "yes" },
success : function(data) {
alert(data);
}
});
Just use alert method, pass the parameter into alert box
success : function(data) {
var response_string = JSON.stringify( data );
// do your substr operations here
alert( your_substring );
}
JSON.stringify converts your response to string. you can then perform any string operations you like on it.
Happy coding :)
No need to reinvent the wheel. You can use filter_var()
on this one. Consider this example:
<?php
if($_SERVER['REQUEST_METHOD'] == 'POST') {
$input_ip = $_POST['ip'];
echo filter_var($input_ip, FILTER_VALIDATE_IP) ? 'Valid IP' : 'Not a valid IP';
exit;
}
?>
<input type="text" id="ip_address" />
<button id="validate" type="button">Validate</button>
<script src="jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$('#validate').click(function(){
var ip = $('#ip_address').val();
$.ajax({
url: 'index.php', // just same page sample
type: 'POST',
data: {ip: ip},
success: function(response) {
alert(response);
}
});
});
});
</script>
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