总是使用ajax弹出警报

Question

I have a problem about my code in ajax.

AJAX

<script type="text/javascript">
 var stopTime =0;
 var scoreCheck =  function ()
    {
      $.ajax({
      url: 'http://127.0.0.1/ProgVsProg/main/checkScoreRoundOne',
      success:function(output){
        if(output !=' '){
          $('#maincontent1').html(output);
            bootbox.alert("We have a winner", function(){     
            });    
         stopTime = setTimeout(scoreCheck, 1000); 
            }
        else {
          clearTimeout(stopTime);
            }
    }
  });
}
stopTime = setTimeout(scoreCheck,1000);
 </script>

CONTROLLER

public function checkScoreRoundOne(){
$id = $this->session->userdata('userID');
$battleID = $this->lawmodel->getBattle($id);
foreach($battleID as $row){
    $Rscore = $row->requestedScore;
    $Cscore = $row->challengerScore;
    if($Cscore == '1'){
        $rID = $this->lawmodel->getID($row->challengerID);
        foreach($rID as $row){
          echo $row->username."Got the correct answer";
           }
        }
    else if($Rscore == '1'){
        $cID =$this->lawmodel->getID($row->requestedID);
        foreach($cID as $row){
            echo $row->username."Got the correct answer";
          }
        }
    else 
        echo "Answer the question";
        }
}

My problem is ajax will always alert even it did not meet the condition in my controller. I cant test my project if it is correct or not..Im using codeigniter..

Im new in ajax plss help..:( Edited

How can i make the alert popup only when it meet the condition in my controller? :( Like when Cscore == '1' alert will popup..

Answer 1

If i get your question right, then this line

if(output !=' '){

in your request should be something like

if(output != "Answer the question"){

Why?
When you don't meet $Cscore == '1' or $Rscore == '1' you return the string "Answer the question" . And knowing that whatever you return will be the content of the output variable it will never be only a space ' ' !

Answer 2

Move the foreach code to the model and instead use return instead of echo.

Say: Model:

public function getID($row->challengerID){
 //some code
if($Cscore || $Rscore){
    foreach($cID as $row){
        return $row->username."Got the correct answer";
      }
  }else{
  return false;
  }