JSON Vs XML

Here's a comparison for JSON and XML

1. When you do a request data from server, on the client side you do:

  a. JSON: 

        var data = eval('(' +ajax.responseText+ ')'); or

        var data = null; eval('data ='+ajax.responseText); or

        var data = new Function('return '+ajax.responseText);

  b. XML:

        var data = ajax.reponseXML;

2. On the server side, the process for the request handling is:

  a. JSON:

        $data_json = json_encode($data_array);

  b. XML:

        $data = '<?xml version="1.0"?>';

        header('Content-type: text/xml');

        echo $data;

3. When you do sending data to server, the process in the client is like this one:

  a. JSON:

         var data = {};

         var data_sending = JSON.stringify($data);

  b. XML:

         var xml_data = '<?xml version=\"1.0\"?>';

         var parser = new DOMParser();

         var xmlDoc = parser.parseFromString(xml_data, 'text/xml');

4. And the process on the server is like:

  a. JSON:

         $data = $_GET['data'];

         $data_array = json_decode($data, true);

  b. XML:

         $data = $_GET['data'];

         $xmlDoc = new DOMDocument();
         $xmlDoc->loadXML(data); // or load(file);

         $names = $xmlDoc->getElementsByTagName('name');

         $name = $names->item(0)->nodeValue;

5. Other similarities:

  a. Converting native object to string representations:

     - JSON => JSON.stringify(data);

     - XML => ?????????

  b. Converting string text to native object:

     - JSON => var data = text.parseJSON();

     - XML => var doc = new DOMParser();

              var xmlDoc = doc.parserFromString(data, 'text/xml');

JSON Vs XML