Extract value from AJAX response

Question

My php code is as below

if ($data = $user->fetch()) 
{
 echo json_encode(array("output" => $data));
}
else
{
 echo json_encode(array("output" => $data));
}

My javascript code is as below

success: function(response) 
{ 
 alert(response); //shows me [object Object] 
 alert(response[0].output); // shows me nothing
 alert(response[0]); //shows me undefined
 alert(JSON.stringify(response)); //shows me {"output":false} 
 //I would like to get only true or false
}

From this post (jQuery AJAX call returns [object Object]) I knew that [object Object] is basically an array.

From this post (jQuery Ajax: get specific object value) I got below words.

"As you can see your response starts with [ and ends with ]. So your response is an array.

Then, inside the array, you get objects (starting with { and ending with }).

So your data is an array, which can be accessed with data[x] (x being the index), and each member of the selected object can be accessed with the .dot notation: .word, .text etc.

So in your case, if there's only one result, you can do data[0].word."

In this case I should get my expected result using alert(response[0].output);

But I am not getting that result. Can anyone help me in this regard ??

• Shaiful Islam: you will get it by response.output.Try this at your javascript. var data=response.output.Now data[0] is first element of your $data and others.

Answer 1

First off, make sure that you have explicitly set that you're going to receive JSON:

dataType: 'JSON',

Then try to access them thru this instead:

success: function(response) {
 console.log(response.output);
 // kindly open your console browser to see contents
 // i think this is F12
 if(response.output) {
 // do something if true
 } else {
 // do something if false
 }
}

Answer 2

You can try also this one:

success: function(response) {
 // check your console
 console.log(response);
 //this two will give you same result
 console.log(response.output);
 console.log(response['output']);
 //either of this two
 var output = response.output; 
 var output = response['output']; 
 if(output){
 //code here
 }
}