//gettext files
// languages/my-plugin-fr_FR.pot
// languages/my-plugin-fr_FR.mo

//Javascript files
// js/main.js
(function($){

  function getResources() {
        $.ajax({
            type: "POST",
            url: ajax_object.ajaxurl,
            dataType: "json",
            data: {
                action: 'get_resources'
            }
        })
        .done(function(data) {
            if (typeof data == "object" && data.hasOwnProperty("html")) {
                $(".my-selector").empty().html(data.html);
            } else {
               alert("error on server");
            }
        })
        .fail(function() {
            alert("error on server");
        });
    }

  $(document).ready(function() {
     getResources();
  });

})(jQuery);
// end js/main.js


<?php
//MyPlugin class

class MyPlugin {
  /// This value will be used as a unique identifier for translations
  public static $theme_domain_name = 'my-plugin';

  public function init() {
     if (!is_admin()) {
      //any scripts and styles needed for the plugin to work in the front end
      add_action( 'wp_enqueue_scripts', array($this,'add_scripts_styles') );
    }

    add_action('wp_ajax_get_resources', array($this,'ajax_get_resources'));
    add_action('wp_ajax_nopriv_get_resources', array($this,'ajax_get_resources'));
  }

  public function ajax_get_resources() {
        $html = "";

        //just an example of returning post objects
        $posts = get_posts();

        $html .= $this->get_resources_html($posts);

        echo json_encode(array('html'=>$html));

        die();
  }

  public function add_scripts_styles() {
     wp_register_script('main-js', plugin_dir_url(__FILE__) . 'js/main.js', array('jquery'), '20131023' );
     wp_enqueue_script('main-js' );
     wp_localize_script('main-js', 'ajax_object', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ) ) );
  }

  public function get_resources_html($resources) {
     $load_more_text = __('Load more',MyPlugin::$theme_domain_name);

     //$html .= < do some other work on the resource posts provided >

     $html .= <<<LOAD
<a href="#">
    <span class="text-wrapper"><span class="text">
    {$load_more_text}
    </span></span>
</a>
LOAD;

    return $html;
  }
}
?>

<?php
//root plugin file my-plugin.php

require_once dirname( __FILE__ ) .'/MyPlugin.php';

$MyPlugin = new MyPlugin();

add_action("plugins_loaded",function() {
    load_plugin_textdomain(MyPlugin::$theme_domain_name , false, dirname( plugin_basename(__FILE__) ) . '/languages/');
});

$MyPlugin->init();
?>

/* if qTranslate is installed */
/* set front locale for ajax calls requested from front-end */

function set_locale_for_frontend_ajax_calls() {

    if ( is_admin() && defined( 'DOING_AJAX' ) && DOING_AJAX
        && substr( $_SERVER['HTTP_REFERER'], 0, strlen( admin_url() ) ) != admin_url() ) {

        load_theme_textdomain( 'your-theme-domain-name', get_template_directory() . '/languages’ );
    }
}

add_action( 'admin_init', 'set_locale_for_frontend_ajax_calls' );

add_action('wp_head','jsURLs');

function jsURLs(){

    global $q_config;

    ?><script type="text/javascript">
        /* <![CDATA[ */
        var ajaxurl      = "<?php echo admin_url('admin-ajax.php?lang='.$q_config['language']); ?>";
        /* ]]> */
    </script><?php

}

/* if qTranslate is not installed */
/* set front locale for ajax calls requested from front-end */

function set_locale_for_frontend_ajax_calls() {

    if ( is_admin() && defined( 'DOING_AJAX' ) && DOING_AJAX
        && substr( $_SERVER['HTTP_REFERER'], 0, strlen( admin_url() ) ) != admin_url() ) {
        setlocale(LC_ALL, $_GET['lang']);
        load_theme_textdomain( 'your-theme-domain-name', get_template_directory() . '/languages’ );
    }
}

add_action( 'admin_init', 'set_locale_for_frontend_ajax_calls' );

add_action('wp_head','jsURLs');

function jsURLs(){

    global $q_config;

    ?><script type="text/javascript">
        /* <![CDATA[ */
        var ajaxurl      = "<?php echo admin_url('admin-ajax.php?lang='.get_locale()); ?>";
        /* ]]> */
    </script><?php

}

<?php
    global $sitepress;
    $current_language = $sitepress->get_current_language(); // get current language
?>



(function($){

  function getResources() {
        $.ajax({
            type: "POST",
            url: ajax_object.ajaxurl,
            dataType: "json",
            data: {
                action: 'get_resources',
                lang:  <?php echo $current_language;  ?>
            }
        })


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