踩顶效能ajax

踩顶功能ajax

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//投赞成票function doContentVote(siteId,contentId) {    var url = cp+"/jsp/portal/opcontent/content_service.jsp?action=doVote&contentId="+contentId+"&siteId="+siteId;     if (window.XMLHttpRequest) {         req = new XMLHttpRequest();     }else if (window.ActiveXObject) {         req = new ActiveXObject("Microsoft.XMLHTTP");     } if(req){     req.open("POST", url, true);     req.onreadystatechange = callbackContentVote;     req.send(null);  } } //回调函数function callbackContentVote() {     if (req.readyState == 4) {         if (req.status == 200) {            var obj = eval("("+req.responseText+")");            if(obj.flag==0) {            alert("您的投票次数已达上限!");            }else{alert("投票成功"+obj.voteCount);document.getElementById("voteCountId").innerHTML=obj.voteCount;                     }        }else{         alert ("投赞成票出错：" + req.statusText);         }            } } 

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java

JSONObject obj = JSONObject.fromObject(retMap);out.print(obj.toString());

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