Category » AJAX

JSON – An Overview


JSON stands for JavaScript Object Notation. It is a format for storing and exchanging data. It is based on a subset of the JavaScript Programming Language.

The file type for JSON files is “.json” and MIME type for JSON text is “application/json“.

Here are the characteristics of JSON:

  1. It is a lightweight data-interchange format.
  2. It is easy for humans to understand.
  3. It uses Javascript format but it is a text which makes it is completly language independent as text can be read and parsed by any programmng language.

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Magento – AJAX "Headers already sent" error solved

While working with AJAX in Magento many of you might have received the following error like I did:

2013-05-02T10:25:15+00:00 DEBUG (7): HEADERS ALREADY SENT:
[0] /var/www/html/ecomm/app/code/core/Mage/Core/Controller/Response/Http.php:44
[1] /var/www/html/ecomm/lib/Zend/Controller/Response/Abstract.php:727
[2] /var/www/html/ecomm/app/code/core/Mage/Core/Controller/Response/Http.php:75
[3] /var/www/html/ecomm/app/code/core/Mage/Core/Controller/Varien/Front.php:188
[4] /var/www/html/ecomm/app/code/core/Mage/Core/Model/App.php:304
[5] /var/www/html/ecomm/app/Mage.php:599
[6] /var/www/html/ecomm/index.php:104

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