我在wordpress中工作，在按下submit按钮时，我希望函数通过ajax返回结果，结果应在屏幕上显示为警报。但当我按submit时，什么都没有显示。

下面是我的代码

Ajax代码（ajaxinsert.js文件）

jQuery(document).ready(function(){

////////////////////////////////////////////////////////////
    jQuery("#addimage").submit(function (e) { //form is intercepted
        e.preventDefault();
        //serialize the form which contains secretcode
        var sentdataa = $(this).serializeArray();

        //Add the additional param to the data        
        sentdataa.push({
            name: \'action\',
            value: \'wp_up\'
        })

        //set sentdata as the data to be sent
        jQuery.post(yess.ajaxurl, sentdataa, function (rez) { //start of funciton
            alert(rez);

            return false;
        } //end of function
        ,
        \'html\'); //set the dataType as json, so you will get the parsed data in the callback
    }); // submit end here
});

HTML表单

<form id="addimage" action="" method="post" enctype="multipart/form-data">
<input type="submit" name="upload" style="margin-bottom:15px;">
</form>

PHP代码（我在页面上使用了此代码的快捷码，下面的代码位于functions.PHP文件中）：

add_shortcode( \'test\', \'addimage\' );

function wp_up()
{   
echo "zeeshanaslamdurrani";
exit();

}

function addimage(){  

add_action( \'wp_ajax_wp_up\', \'wp_up\' );
add_action( \'wp_ajax_nopriv_wp_up\', \'wp_up\');


// register & enqueue a javascript file called globals.js
wp_register_script( \'globalss\', get_stylesheet_directory_uri() . "/js/ajaxinsert.js", array( \'jquery\' ) ); 
wp_enqueue_script( \'globalss\' );

// use wp_localize_script to pass PHP variables into javascript
wp_localize_script( \'globalss\', \'yess\', array( \'ajaxurl\' => admin_url( \'admin-ajax.php\' ) ) );
} 

add_action( \'wp_ajax_wp_up\', \'wp_up\' );
add_action( \'wp_ajax_nopriv_wp_up\', \'wp_up\');
function wp_up() {   
    echo "zeeshanaslamdurrani";
    exit();
}

add_shortcode( \'test\', \'addimage\' );
function addimage(){     

    // register & enqueue a javascript file called globals.js
    wp_register_script( \'globalss\', get_stylesheet_directory_uri() . "/js/ajaxinsert.js", array( \'jquery\' ) ); 
    wp_enqueue_script( \'globalss\' );

    // use wp_localize_script to pass PHP variables into javascript
    wp_localize_script( \'globalss\', \'yess\', array( \'ajaxurl\' => admin_url( \'admin-ajax.php\' ) ) );
}