JSONP cross-domain information sharing_json

Due to the same-origin policy, generally a web page located at server1.example.com cannot communicate with a server other than server1.example.com, with the exception of the HTML <script> element. Using this open policy of the <script> element, web pages can obtain JSON data dynamically generated from other sources, and this usage pattern is called JSONP. The data captured with JSONP is not JSON, but arbitrary JavaScript, executed with a JavaScript interpreter instead of parsed with a JSON parser. <br><br>The following is my application in a project: <br><br>Description: The domain name dev.uc.everychina.com wants to obtain the data under the domain name dev.members.everychina.com <BR>dev. Server-side code for members.everychina.com: <BR><div class="codetitle"><span><a style="CURSOR: pointer" data="93218" class="copybut" id="copybut93218" onclick="doCopy('code93218')"><U>Copy code The code is as follows: <div class="codebody" id="code93218"> <BR>class JsController extends CController { <BR>public function actionIndex() { <BR>$callback = isset($_GET['callback']) ? $_GET['callback'] : ''; <BR>$result = array(); <BR>$userinfo = Intf_Client_Uc_User::instance()->getLoginUser(); <BR>$cid = Everychina_Member::instance()->getCid($userinfo['uid']); <BR>// Company showroom score<BR>$room_score = Ec_RoomScore::getInstance(); <BR>//Get the old score of the showroom<BR>$update_status = true; <BR>//Rescore<BR>if(isset($_GET ['action']) && $_GET['action']=='update') { <BR>$score_res = $room_score->getScoreInfo($cid); <BR>$room_score->updateScoreResult($cid ,$score_res); <BR>$update_status = true; <BR>} <BR>$result['status'] = $update_status; <BR>$res = $room_score->getScoreResult($cid); <BR>$result['score'] = $room_score->getScoreResultView($res['score']); <BR>if ($callback) { <BR>$js = json_encode($result); <BR>echo "$callback( ($js) );"; <BR>} <BR>} <BR> <BR>Under the domain name dev.uc.everychina.com, front-end call (html) <BR><div class="codetitle"> <span><a style="CURSOR: pointer" data="84932" class="copybut" id="copybut84932" onclick="doCopy('code84932')"><U>Copy code The code is as follows:<div class="codebody" id="code84932"> <BR><a id="update_score" href="#" onclick="ajaxUpdateScore( );return false;">update score <BR><div id="member_score"> <BR> <BR>javascript <BR><div class="codetitle"><span><a style="CURSOR: pointer" data="62906" class="copybut" id="copybut62906" onclick="doCopy('code62906')"><U>Copy code The code is as follows:<div class="codebody" id="code62906"> <BR>　 function ajaxUpdateScore(){ <BR>if(document.getElementById("member_score_script")) { <BR>var score_script = document.getElementById("member_score_script"); <BR>document.body.removeChild(score_script); <BR>} <BR>var score_script = document.createElement("script"); <BR>score_script .id = "member_score_script"; <BR>score_script.src = 'http://dev.members.everychina.com/index.php?r=js/index&callback=show_score&t=' new Date().getTime(); <BR>document.body.appendChild(score_script); <BR>} <BR>function show_score(json) { <BR>if(json.status == true) { <BR>var html = '<p>level: ' json.score.level '</script>

';
html = '

msg:' json.score.msg '

';
html = '

score:' json.score.score '

';
$("#member_score").html(html);
}
}