jQuery实现ajax跨域

1、dataType:'jsonp'

2、type: 'get'

3、把要传的参数以url方式传出去  url:'http://gameapi.feiliu.com/lqzg?tel='+telnumber,

JS代码

php代码（CI框架）

public function index()        {                header('Content-Type:text/html;Charset=utf-8');              $tel = $_GET['telnumber'];            if(! preg_match("/1[3458]{1}\d{9}$/",$tel)){                $key = -1;                $mes = '手机号无效！';            }else{                //检查号码是否第一次领取                if( $this->gamem->test_phone($tel)){                    $key = -1;                    $mes = '手机号已经领取过！';                                    }else{                    //随机选取一个code                    $code = $this->gamem->get_code();                                if($code){                        //将该用户信息插入                        $ret = $this->gamem->insert_user($tel);                        if($ret){                            $key = 1;                            $mes = $code;                        }                    }                }            }              $data = array(                'key' => $key,                'mes' => $mes            );            echo $_GET['jsoncallback'] . "(".json_encode($data).")";                      exit;                        }