4

I'm using json_encode to convert an associative array to JSON format. But When I try to print the property of data accessed through Ajax from this PHP file, it shows undefined. When I checked the type of data, it returns string.

$elem1= "<div class='menuitems'>
                        <div class='menu1'>".$row['name']."<span class='srno'>".$row['srno']."</span></div>
                        <div class='menu2'>".$row['email']."</div>
                        <div class='menu3'>".$row['password']."<span class='cross'>X</span></div>
                        <div class='clear'></div>
                    </div>";
$elem2=$row['category'];
$array=array(
        "elem1"=>"$elem1",
        "elem2"=>"$elem2"
    );
echo json_encode($array);

Why is it so? How can I access the elem1 and elem2 through this string?

Improve this question
4
  • JSON is a string format ... Commented Jul 19, 2016 at 10:03
  • Call json_decode() to decode it. Commented Jul 19, 2016 at 10:03
  • 1
    The whole point of JSON is to convert arrays and objects into strings, so you can send them over the network or save it in a file. Commented Jul 19, 2016 at 10:04
  • Post your AJAX code Commented Jul 19, 2016 at 10:04

1 Answer 1

Reset to default
2

Always HTTP responses will be of string data type. You need to parse the JSON before you can use. There are two ways. You need to use:

$.getJSON(url, function (data) {
    typeof data; // object
});

In contrast to:

$.get(url, function (data) {
    typeof data; // string
});

If you are using the above one, you need to use:

$.get(url, function (data) {
    typeof data; // string
    data = JSON.parse(data);
    typeof data; // object
});

Note: I am using AJAX from jQuery. The conversion, which is very specific is in pure JavaScript.

Improve this answer
Sign up to request clarification or add additional context in comments.

13 Comments

You used $.get. Is it valid for $.ajax as well? What's the difference between $.get and $.ajax?
@VikasKumar Yes! $.get is a short cut for $.ajax using URL.
Ok you don't need to define type etc ?
@VikasKumar No! That's the whole point of using a shortcut. :)
@VikasKumar Ah don't worry. Will get soon. There's always a next chance... :) Keep trying.
|

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.