我好像错过了什么。下面共享的代码应该从选择框中获取值，通过Ajax将其传递给PHP函数，该函数将重新生成表数据并根据所选团队对其进行过滤。

我原以为这是一个简单的AJAX调用，但似乎我低估了创建这个jQuery的复杂性。

初始表单呈现，包括HTML表单（由PHP生成）：

ob_start();

// Output the form
echo \'    <form>\' .
\'Select a Team:\' .
\'<select name="select_team"  onchange="fmsapi_refresh_hs()">\' .
\'<option value="">Full Schedule</option>\' .
\'<option value="4783">4783</option>\' .
\'<option value="2994">2994</option>\' .
\'</select>\' .
\'<div id="fmsapi_status"></div>\' .
\'</form>\';


// Start the div
echo \'<div id="frc_hybrid_table">\';

// Populate the table
frc_populate_hybrid_schedule($year, $event, $team);

echo \'</div>\';

//echo \'<h4>Raw Data:</H4><code>\' . $received_xml . \'</code>\';
// Store the output buffer before emptying it and returning it to the calling content.
$returnstring = ob_get_contents();
ob_end_clean();
return $returnstring;

function fmsapi_refresh_hybrid_schedule() {

    // Collect the three variables from the POST parameters
    $year = $_POST["year"];
    $event = $_POST["event"];
    $event = $_POST["team"];

    return frc_populate_hybrid_schedule($year, $event, $team);

}

// Function to enqueue the script
function my_script_enqueuer() {
   wp_register_script( "fmsapi_refresh_script", WP_PLUGIN_URL.\'/fmsapi/fmsapi_refresh_hybrid_schedule.js\', array(\'jquery\') );
   wp_localize_script( \'fmsapi_refresh_script\', \'fmsapiAjax\', array( \'ajaxurl\' => admin_url( \'admin-ajax.php\' )));        

   wp_enqueue_script( \'jquery\' );
   wp_enqueue_script( \'fmsapi_refresh_script\' );

}

add_action( \'wp_ajax_nopriv_fmsapi_refresh_hybrid_schedule\', \'fmsapi_refresh_hybrid_schedule\');

add_action( \'init\', \'my_script_enqueuer\' );

add_shortcode("frc_results", "frc_results");

function fmsapi_refresh_hs() {
    document.getElementById("fmsapi_status").innerHTML = "Query Triggered";
    var data = {
        action: \'fmsapi_refresh_hybrid_schedule\',
        year: \'2017\',
        event: \'ONOSH\',
        team: \'4783\'
    };

    jQuery.ajax({
        type: "post",
        dataType: "json",
        url: fmsapiAjax.ajaxurl,
        data: data,
        success: function (response) {
            document.getElementById("frc_hybrid_table").innerHTML = response;
            document.getElementById("fmsapi_status").innerHTML = data[\'event\'];
        }
    });
}