原生JS Ajax 提交post表单信息

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            var xmlhttp;            if (window.XMLHttpRequest)              {// code for IE7+, Firefox, Chrome, Opera, Safari              xmlhttp=new XMLHttpRequest();              }            else              {// code for IE6, IE5              xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");              }            xmlhttp.onreadystatechange=function()              {              if (xmlhttp.readyState==4 && xmlhttp.status==200)                {                    sl('block',1);                //document.getElementById("opt").style='block';                //alert(xmlhttp.responseText);                }              }            xmlhttp.open("POST","/dota/wenjuan",true);            xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");            xmlhttp.send("answer1="+answer1+"&answer2="+answer2+"&answer3="+answer3+"&answer4="+answer4+"&answer5="+answer5+"&answer6="+answer6+"&answer7="+answer7+"&answer8="+answer8+"&answer9="+answer9+"&answer10="+answer10+"&gameid="+gameid+"&phone="+phone+"&type="+type);

php端代码正常$_POST 使用，返回给ajax数据信息用echo ..然后exit;

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