Stupid IE process 'application/json' content-type.

Let's see the snippets first.

jQuery

$.ajax({
　　'url': 'http://aptana-local/testobject/test1.php',
　　'dataType': 'json',
　　"success": function(data){
    　　alert(data);
       console.log(data);
       console.log(typeof data);
     }
});

PHP (test1.php)

echo $this->_sendResponse($arr);
private function _sendResponse($arr)
    {
        header('HTTP/1.1 200 OK');
        header('Content-type: application/json; charset: UTF-8'); // COMMENT THIS LINE.
        echo CJSON::encode($arr);
        Yii::app()->end();
    }

Js won't get 'data' in IE. We have to comment that line or change the "Content-type"  in PHP file.