How to get values from associative array using Javascript

Question

I have a PHP script that outputs a JSON associative array when an ajax call is made to it. The first key and value in the array (["status" : "failed"]) shows the status. The second key and value (["message" : "Invalid Input"]) shows the message. So i need to first run a check whether the status is "failed", if it is, get the corresponding error message and vice versa.

The problem is how do I get the second key and value pair to get the message.

Here's the JavaScript I'm utilizing:

            var frmdata = new FormData($('#order-form')[0]);        
            $.ajax({
                type: "POST",
                dataType: "json",
                url: 'classes/validate.php',
                cache: false,
                contentType: false,
                processData: false,   
                data: frmdata,
                success: function(data) {
                    $.each( data, function( key, value ) {
                        if (key == "status") {
                            if (value == "failed") {

                            } else if (value == "success") {

                            }
                        }
                    });
                }
            });

Here's the PHP script;

    public function outputJSON($status, $message)
    {
        $this->json_output["status"] = $status;
        $this->json_output["message"] = $message;
        $json = json_encode($this->json_output, true);
        return $json;
    }

How about having response object as {status:'failed',message:'Invlaid Input'}. You can read it like data.status — Rayon
– Rayon, Commented Sep 27, 2015 at 3:30
@aldrin27 Object {status: "failed", message: "Invalid service selected"} — nad
– nad, Commented Sep 27, 2015 at 3:35
Try: if(data.status == 'failed') { alert(data.message); }else { data.message} — aldrin27
– aldrin27, Commented Sep 27, 2015 at 3:38
See what is JSON, how to use the JSON object, and how it differs from the JavaScript objects. — Vidul
– Vidul, Commented Sep 27, 2015 at 3:39

Rayon · Accepted Answer · 2015-09-27 03:40:54Z

1

Try this:

public function outputJSON($status, $message) {
  $json = json_encode(array('status'=>$status,'message'=>$message));
  return $json;
}

var frmdata = new FormData($('#order-form')[0]);
$.ajax({
  type: "POST",
  dataType: "json",
  url: 'classes/validate.php',
  cache: false,
  contentType: false,
  processData: false,
  data: frmdata,
  success: function(data) {
    if (data.status === 'failed') {
      alert(data.message);
    } else {
      //data.status is success
    }
  }
});

answered Sep 27, 2015 at 3:40

Rayon

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1 Comment

nad Over a year ago

Thanks, this is what I needed.

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