Solve the problem of no request when sending non-json data for asynchronous requests of IE8 and IE9

//Sent non-json data 
var datastr='qazwsxedc';

if ('XDomainRequest' in window && window.XDomainRequest !== null) {
    var xdr = new XDomainRequest();
    xdr.open('post',_this.loggerUrl);
    xdr.send(data);
    xdr.onload = function() {
     var data=JSON.parse(xdr.responseText);
    };
} else {
    jQuery.ajax({
    type:'POST',
    async:true,
    timeout:30000,
    url :_this.url,  
    dataType:'json',
    data:datastr,
　　 crosDomain:true,
    success:function(data) {
　　　　if(data.rsp.code==0){
           result={flag:0,message:'Success!'};
    　　}else{
          result={flag:1,message:'Failed!'};
　　　　}
    },
    error:function(XMLHttpRequest, textStatus, errorThrown){
    　　 result={flag:-1,message:'Network connection error!'};
    }
 });
}