Send same name multiple checkbox values via ajax

I have multiple checkbox input elements.

<input type="checkbox" name="userpages[]" id="1" value="1"/>
<input type="checkbox" name="userpages[]" id="2" value="2"/>
<input type="checkbox" name="userpages[]" id="3" value="3"/>
<input type="checkbox" name="userpages[]" id="4" value="4"/>

I want to pass the value of checked element to the php script via Ajax. I tried doing it this way -

var pages = $('input[name="userpages[]"]:checked');
    type: 'POST',
    url: 'post.php',
    data: {pages: pages},
    dataType: 'json',
    success: function(data) {
        if(data.status == 1) {
            alert('Successfully posted on your Facebook pages !');
        } else if(data.status == 0) {
            alert('Error !! Please try again.');
        } else {
            alert('Unknown Error. Reloading this page now...');

and retrieved the value in php script -

  foreach($_POST['pages'] as $page_id) {
    echo $page_id;

But this didn't worked for me. I also tried getting the value of variable pages, when alerted it popped up 'object Object'. Any help would be appreciable. :)


                var checked = []
        $("input[name='userpages[]']:checked").each(function ()

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