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Basic AJAX function in WordPress
var ajaxurl = object.ajaxurl;
var data = {
action: 'my_action', // wp_ajax_my_action / wp_ajax_nopriv_my_action in ajax.php. Can be named anything.
foobar: 'some value', // translates into $_POST['foobar'] in PHP
$.post(ajaxurl, data, function(response) {
alert("Server returned this:" + response);
// embed the javascript file that handles the AJAX vodoo
wp_register_script( 'hip-ajax', plugin_dir_url( __FILE__ ) . '/ajax.js', array( 'jquery' ) );
// declare the URL to the file that handles the AJAX request (wp-admin/admin-ajax.php)
wp_localize_script( 'hip-ajax', 'object', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ) ) );
wp_enqueue_script( 'hip-ajax');
add_action( 'wp_ajax_my_action', 'my_action_callback' );
add_action( 'wp_ajax_nopriv_my_action', 'my_action_callback' ); // for use outside admin
function my_action_callback(){
$foobar = $_POST['foobar'];
// do stuff here, for example wp_update_meta
echo "something"; // will be 'response' in ajax.js
die(); // this is required to return a proper result

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@williamromero williamromero commented Jan 5, 2016

On this example... You have to create hip-ajax folder into the plugins folder, right?


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@annalinneajohansson annalinneajohansson commented Mar 16, 2016

No, hip-ajax is just the handle for the script and you can rename it into anything really.

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