检查删除是否成功消息php ajax jquery mysql(check if delete was successful message php ajax jquery mysql)

 嗨大家甚至我有成功删除消息返回错误删除消息（“无法删除”）除了成功删除消息但查询是wokrking请告诉我，我做错了这里是我的代码\ 
 
 delete.php 
 
  if(isset($_POST['delete_id']) && !empty($_POST['delete_id'])) {
          $delete_id = mysql_real_escape_string($_POST['delete_id']);
    $query=mysql_query("DELETE FROM color WHERE idColor='$delete_id'");
    if($query != false) {
            echo 'true';
          }
    mysql_close();
<script>
 $(document).ready(function(){
        $('.del_btn').click(function(){
        if (confirm("Are you sure you want to delete this Color?"))
       var del_id = $(this).attr('rel');
              $.post('script/delete_color.php', {delete_id:del_id}, function(data) {
          if(data == 'true') {
            $('#'+del_id).remove();alert('Color has been deleted!');
          }
           else {
            alert('Color could not delete!');
          }
                document.messages.submit();
            return false; // This line added}
    });
    }); 
    });

</script>

hi guys even i have success delete the message return false delete message("could not delete") besides success delete messege but query is wokrking please tell me what i am doing wrong here is my codes \
 
delete.php
 
  if(isset($_POST['delete_id']) && !empty($_POST['delete_id'])) {
          $delete_id = mysql_real_escape_string($_POST['delete_id']);
    $query=mysql_query("DELETE FROM color WHERE idColor='$delete_id'");
    if($query != false) {
            echo 'true';
          }
    mysql_close();
<script>
 $(document).ready(function(){
        $('.del_btn').click(function(){
        if (confirm("Are you sure you want to delete this Color?"))
       var del_id = $(this).attr('rel');
              $.post('script/delete_color.php', {delete_id:del_id}, function(data) {
          if(data == 'true') {
            $('#'+del_id).remove();alert('Color has been deleted!');
          }
           else {
            alert('Color could not delete!');
          }
                document.messages.submit();
            return false; // This line added}
    });
    }); 
    });

</script>

原文：https://stackoverflow.com/questions/8611037