没有获得ajax查询到我的php页面的成功回调

Question

Edit: changed $.alert() to alert()

I've got a file, planner.php that uses JQuery to send an ajax request to the same page. Using the debugger, I can see that the php correctly gets the request, accesses my database, and then sends the data. However even after sending it I get no success callback in the javascript. What's wrong?

JQuery:

$(function()
{
    $.post('planner.php', {"want": "keys"}, success_func, 'json');
});

function success_func(result)
{
    //This is never called :(
    alert("Worked");
}

PHP:

<?php
require_once "./php/couch.php";
require_once "./php/couchClient.php";
require_once "./php/couchDocument.php";

if (count($_POST) > 0 && array_key_exists("want", $_POST)) {
    $couch_dsn = "http://localhost:5984/";
    $couch_db = "subjects";
    $client = new couchClient($couch_dsn, $couch_db);
    header('Content-type: application/json');
    $response = $client->getView('subject_views', 'keys');
    echo json_encode($response);  //This all seems to work fine
}
?>

It's that simple. All of the PHP code there is just accessing couchDB which you don't have to worry about because I know that $response is set correctly.

Answer 1

This is probably be cause there is no such thing like $.alert(), use simple alert() instead.

Also your success_func is declared below the ajax call, move it up before $.post();

EDIT:

as the function is declared, there is no need to type it before executing.