js-post-demo

https://stackoverflow.com/questions/9713058/send-post-data-using-xmlhttprequest

accepted

This code demonstrates on how to do this. Here is just the listing from that page, in case the above link goes down again: var http = new XMLHttpRequest(); var url = "get_data.php"; var params = "lorem=ipsum&name=binny"; http.open("POST", url, true); //Send the proper header information along with the request http.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); http.onreadystatechange = function() {//Call a function when the state changes. if(http.readyState == 4 && http.status == 200) { alert(http.responseText); } } http.send(params);