checking each div in page and change value according to the data in the div

Question

i have buttons created via display suite(the buttons contain 'join' text i need to run the function check to see the value should be join or leave. you can find my js code and my check function code. my problem is i think im calling the function the wrong way.

function init() {
$('div').each(function(){
  $ajax('checkteam')
   .then(function(){
     if (res.data === true){
        var button = $(this).find('.button.pulse');
        $(button).text === 'Leave';
        $(button).data('leave', true);
     }
     else {
          }
        }       
   )  
})
}

'checkteam' => array(
  'type' => MENU_CALLBACK,
  'page callback' => 'card_generator_check_team_ajax',
  'page arguments' => array(2),
  'access arguments' => array('access content'),
),


function card_generator_check_team_ajax($term_name) {
global $user;
$term = reset(taxonomy_get_term_by_name($term_name));
$tid = $term->tid;
$user_fields = user_load($user->uid);
$arrlength = (sizeof(($user_fields->field_teams[und])));
for($x = 0; $x < $arrlength; $x++) {
$mytid = ($user_fields->field_teams[und])[$x]['tid'];
if ($tid == $mytid){
return true;
}
return false;
 }
}

i need to get the data from checkteam function and if its true then the value should be leave.

Answer 1

problem solved! the php function was wrong.

function card_generator_check_team_ajax($term_name)
{
  global $user;
  $term = reset(taxonomy_get_term_by_name($term_name));
  $tid = $term->tid;
  $user_fields = user_load($user->uid);

  $arrlength = (sizeof(($user_fields->field_teams[und])));
  for ($x = 0; $x < $arrlength; $x++) {
    $mytid = ($user_fields->field_teams[und])[$x]['tid'];
    if ($tid == $mytid) {
      $arr = 'true';
      continue;
    }
  }
  drupal_json_output($arr);
}