php - AJAX: return true or false on 'success:' -

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i have following ajax script, reason var ok it's not returning true or false form can continue:

function ajax_call(email,title,url){     var email = document.getelementbyid("email").value;     var title = document.getelementbyid("title").value;     var url = document.getelementbyid("url").value;     var parametros = {"emaail":email, "tiitle":title, "uurl":url};     var ok = true;     $.ajax({         data: parametros,         url: 'validate.php',         type: 'post',         error: function () {             alert("an error has occurred! try again!");         },         success: function (response) {              if(response == 'bien') { ok = true; } else { $("#ajax_cal").html(response); ok = false; }          }     });  return ok; }

html:

<form onsubmit="return ajax_call();"> ... </form>

php:

<?php //////....     if(!empty($errors)) {          foreach($errors $error) {              echo '<li>'.$error.'</li>';         }     } else { echo 'bien'; }  ?>

everything works good, except return value. in advance.

prevent submit completely, send ajax request, if it's good, submit form.

html:

<form id="myform"> ... </form>

javascript:

$("#myform").submit(function(e){     // prevent submit     e.preventdefault();      var email = document.getelementbyid("email").value;     var title = document.getelementbyid("title").value;     var url = document.getelementbyid("url").value;     var parametros = {"emaail":email, "tiitle":title, "uurl":url};     $.ajax({         data: parametros,         url: 'validate.php',         type: 'post',         context: this,         error: function () {             alert("an error has occurred! try again!");         },         success: function (response) {              if($.trim(response) == 'bien') {                  this.submit(); // submit, bypassing jquery bound event             }              else {                  $("#ajax_call").html(response);              }          }     });  });

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