JQuery $.post() with array and/or receiving array doesn't work

Question

I want to ping servers and get the online status of that server with JQuery $.post() method. My current code:

JQuery:

$(window).load(function() {
    $.post('php/ping_server.php', { 'domains[]': ["example.com", ..., ...] }, function(status) {
        for (var i=0; i < status.length; i++) {
            $('.sidebox .onlinestatus').eq(i).addClass(status[i]).text(status[i]);
        }
    }, "json");
});

PHP:

include('functions.php');

if (isset($_POST["domains"])) {
    $status = array();
    foreach($_POST["domains"] as $domain) {
        $status[] = pingDomain($domain);
    }
    die(json_encode($status));
}

The function pingDomain() returns "Offline" or "Online" and it works.
I'm not getting any errors or warnings in the console but nothing happens...

What is wrong?

'domains[]': ["example.com", ..., ...] is wrong do 'domains': ["example.com", ..., ...] — Ehsan Sajjad
– Ehsan Sajjad, Commented May 24, 2014 at 19:27
@Ehsan: I replaced it but nothing changed - not working, no errors — Dennis98
– Dennis98, Commented May 24, 2014 at 19:36
console.log(status) in you jquery recieve method, then tell us if it prints what it should. — kajacx
– kajacx, Commented May 24, 2014 at 19:39
@kajacx: thats strange - it doesn't print anything on the console... — Dennis98
– Dennis98, Commented May 24, 2014 at 19:47
Are you using your browser developer tools to inspect the requests and see what's sent and what's responded? — Alex Barroso
– Alex Barroso, Commented May 24, 2014 at 19:52

code-jaff · Accepted Answer · 2014-05-25 14:17:08Z

1

You might need use the proper header in the php, like

include('functions.php');

if (isset($_POST["domains"])) {
    $status = array();
    foreach($_POST["domains"] as $domain) {
        $status[] = pingDomain($domain);
    }
    header('Content-Type: application/json'); // here 
    die(json_encode($status));
}

or parse the response in JS like

$(window).load(function() {
    $.post('php/ping_server.php', { 'domains': ["example.com", ..., ...] }, function(status) {
        status = JSON.parse(status); // here
        for (var i=0; i < status.length; i++) {
            $('.sidebox .onlinestatus').eq(i).addClass(status[i]).text(status[i]);
        }
    }, "json");
});

Note: both because you have specified the expected datatype explicitly. otherwise not needed.

answered May 25, 2014 at 14:17

code-jaff

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1 Comment

Dennis98 Over a year ago

Ok. Didn't know that. So if I leave out the datatype in the $.post()-method I can only do the JSON.parse in JQuery? I'll test it as soon as possible (database down).

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