You may have cors (cross origin) problems - its kind if tricky but you probsbly 
need a header to allow - search on this 

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[email protected] wrote:

>hello 
>
>if we use chrome or firefox we can't successfully get the jquery ajax post 
>data,
>
>but we found if we use ie9 or ie8 to send POST data by jquery ajax , 
>node.js just receive empty body {}
>
>even we change the header like content-type to application/json or 
>text/plain and Accept value it still didn't work
>
>so is here anyone have the same problem or have any solution , please help 
>me  thanks a lot 
>
>i paste my code below 
>
>-------------------------------------------
>
>if(jQuery.browser.msie && window.XDomainRequest) {
>
>                       //var 
> data=JSON.stringify({'property_id':'50da64f65d396b1e48000001','name':'222','start_date':'2012/11/11'});
>               var data='property_id=50da64f65d396b1e48000001&id=222';
>
>               var xdr = new XDomainRequest();
>               xdr.contentType= 'text/plain';
>
>               xdr.onload = function (e) {
>            var data = $.parseJSON(xdr.responseText);
>            if (data == null || typeof (data) == 'undefined') {
>                alert(data)
>            }
>            //success
>               };
>                        xdr.onerror = function (e) {
>                //alert(e);
>               }
>
>                       xdr.open("POST", url);
>                       xdr.send(data);
>
>                        }
>                        else
>                        {
>                               
> $.post(url,{'property_id':'111','name':'222','start_date':'2012/11/11'}, 
> function(data) {
>                           alert(data)
>                         });
>                       }
>
>
>---------------------------------------------------
>
>
>$.ajax({
>       beforeSend: function(xhrObj){
>                xhrObj.setRequestHeader("Content-Type","application/json");
>                xhrObj.setRequestHeader("Accept","application/json");
>        }
>  url: url,
>  type: "POST",
>  data: JSON.stringify({'property_id' : 'test'}),
>  headers : {
>                'Accept' : 'application/json',
>                'Content-Type' : 'application/x-www-form-urlencoded'
>            },
>            dataType: "json",
>  success: function(data){
>     alert(data);
>  }
>});
>
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