I'm looking to collect form input and pass it to a file called processing.php with AJAXJS:$(document).ready(function () {    var serializedSubmission;    var responseObj;    $('#myForm').on('submit', function (e) {        e.preventDefault();        serializedSubmission = $('#myForm').serialize(); // get input        if (checkInput()) { // validate            process();  // append 'action' and process data        }    });    /* data processing functions */    // verify all parameters have values    function checkInput() {        var temp = decodeURIComponent(serializedSubmission);        if (temp.search('=&') > 0 || temp.slice(-1) == '=') {            console.log('Form is missing parameters!');            return false;        } else {            return true;        }    }    // append 'action' and pass data to php    function process() {        var data = {'action': 'demo'}; // set action to correspond with processing.php        data = serializedSubmission + & + $.param(data);        $.ajax({            type: 'POST',            dataType: 'json',            url: 'php/processing.php',            data: data,            success: function (data) {                responseObj = JSON.parse(data['json']);                console.log('ajax success:');                console.log(responseObj);            },            error: function (xhr, desc, err) {                console.log(xhr);                console.log('Details: ' + desc + '\nError: ' + err);            }        });    }});PHP:<?phpif(isAjax()) {    if(isset($_POST['action']) && !empty($_POST['action'])) { // check if action value exists        $action = $_POST['action'];        switch($action) {            case 'demo':                demo();                break;        }    }}// check if ajax requestfunction isAjax() {    return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower(        $_SERVER['HTTP_X_REQUESTED_WITH']    ) == 'xmlhttprequest';}// action = 'demo'function demo() {    $return = $_POST;    $return['json'] = json_encode($return);    echo json_encode($return);}// action = 'widget'function widget() {    // do stuff    echo json_encode($return);}How's it look?
Using jQuery and AJAX process a form with PHP
javascript;php;jquery;json;ajax