AJAX Request Debug Example

ajax_debug.js

$.ajax({
    url: 'submit.php',
    data: $(this).serialize(),
    type: 'POST',
    dataType: 'json',
    success: function(data) {
        if (data.status == 0) {
            alert('You are offline!\nPlease check your network connection.');
        } else if (data.status == 404) {
            alert('Requested URL not found.');
        } else if (data.status == 500) {
            alert('Internal server error.');
        } else if (e == 'parsererror') {
            alert('Error.\nParsing JSON request failed.');
        } else if(e == 'timeout') {
            alert('Request timed out.');
        } else {
            alert('Unknown error.\n' + data.responseText);
        }

        if (data.status == 'success') {
            alert("Request complete!");
        } else if (data.status == 'error') {
            alert("Error completing request!");
        }
    },
    error: function(data) {
        alert("There was an error. Please try again.");
    }
});