$ .post似乎不起作用

Question

There are a couple of alert() calls in the jQuery which are showing up, but the alert inside the $.post does not seems to respond. I already tested the PHP code and it works fine. I think it is my path, but I already check them before.

<form id="login-form" method="post" class="form-inline" target="_top">
    <input type="text" tabindex="2"  id="username" placeholder="Username" name="email" class="inputtext">
    <input type="password" tabindex="3" id="userpass" placeholder="Password" name="pass" class="inputtext">
    <button tabindex="4" id="loginButton">Login</button>
</form>

$(document).ready(function(e) {
    $('#loginButton').click(function(e) {
        alert("start function");
        $.post('../php/login.php', {
            'username': $('#username').val(),
            'userpass': $('#userpass').val()
        }, function(data){
            alert(data);
        });
        alert("end function");
    });
});

<?php    
    require('config.php');

    $queryStmt = 'SELECT user_first, user_last FROM users WHERE user_name=:sqlIdName AND user_password=:sqlPass';
    $queryPrepare = $dba_connect->prepare($queryStmt);
    $queryPrepare->execute(array(':sqlIdName'=>$_POST['username'],':sqlPass'=>md5($_POST['userpass'])));
    $queryResult = $queryPrepare->fetch(PDO::FETCH_ASSOC);
    $queryPrepare->closeCursor();

    var_dump($queryResult);

    if ($queryResult == false)
        return false;
    else 
        return true;  
?>

My file structure is this:

Answer 1

Try this:

$(document).ready(function(e) {
    $('#loginButton').click(function(e) {
        $.post('../php/login.php', {
            functions: 'userLogin',
            username: $('#username').val(),                    
            userpass: $('#userpass').val()
        }).done(function( data ) {
            alert("Data Loaded: " + data);
        });
    });
});