<script>
// Request (GET https://church3twentyone.ccbchurch.com//api.php)

jQuery.ajax({
    url: "https://church3twentyone.ccbchurch.com//api.php",
    type: "GET",
    data: {
        "srv": "public_calendar_listing",
        "date_start": "2017-11-26",
        "date_end": "2017-12-24",
    },
    headers: {
        "Cookie": "PHPSESSID=0818fe84c656b22eac0f0567369260d5; server_id=2644173958.1.3499007016.3184395264",
        "Authorization": "Basic YzN0d2VudHlvbmU6RGcyb0wjI1lxcDQ=",
    },
})
.done(function(data, textStatus, jqXHR) {
    console.log("HTTP Request Succeeded: " + jqXHR.status);
    console.log(data);
})
.fail(function(jqXHR, textStatus, errorThrown) {
    console.log("HTTP Request Failed");
})
.always(function() {
    /* ... */
});
</script>