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up vote 2 down vote favorite

I am using a jquery ajax call which accepts json response :

 var posturl = '/admin/getparamdetails/';
    var data = "adnetworkId="+adnetworkId;
    $.ajax({
        type: "POST",
        url: posturl,
        data : data,
        datatype: "json",
        success: function(msg){
            //$("#displayPramForm").html(msg);
            //alert('hello'+msg.length+' '+msg.hello.length);
            console.log(msg);
            if(msg!='')
            {
                alert(msg.hello);
            }
        },
        failure: function(msg){}
    });

in my php backend function , I am using json_encode on a simple array as shown:

 $json_encoded_string =  json_encode(array("hello"=>'abc'));
 echo $json_encoded_string;
 die;

but alert(msg.hello) returns undefined for me. What is going wrong here ? Also , in my console.log I am able to get the output as :

{"hello":"abc"}
share|improve this question

2 Answers 2

up vote 2 down vote accepted

Use parseJSON on the return data:

if (msg) {
  msg = $.parseJSON(msg);
  alert(msg.hello);
}
share|improve this answer
    
thanks @powers1...it did work.. –  debaShish Dec 15 '11 at 10:50
up vote 1 down vote

you have to send the data as Content-Type "application/json", otherwise it won't work.

Just add the following in your PHP File:

header('Content-type: application/json');
share|improve this answer
    
nope ,still it didn't work. –  debaShish Dec 15 '11 at 10:45
    
It should be header('Content-Type: application/json'); –  srph Jan 8 at 21:00

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