php - Unable to post variables with jquery post -

this question exact duplicate of:

• unable post variables jquery post() 2 answers

i trying pass variables modal form page. declare variables form id tags in each selection.

page reloads test.php, no variable can echoed.

javascript

var id = $( "#id" ), name = $( "#name" )  $.post("jqtest/test.php", { device_id: "id", device_name: "name" }); load('jqtest/test.php'); 

test.php

echo $_post['device_name']; echo $_post['device_id']; 

var id = $( "#id" ), name = $( "#name" ) /* if have tag <input id='id' value='abc'> , want abc , $( "#id" ).val();  if have tag <div id='id' >abc</div> , want abc,$( "#id" ).html(); */ $.post("jqtest/test.php", { device_id: "id", device_name: "name" }); /* after id , name , need $.post("jqtest/test.php", { device_id: id, device_name: name }); */  load('jqtest/test.php'); /*   useless delete line   if need callback, ref:   $.post("test.php", { name: "john", time: "2pm" })     .done(function(data) {     alert("data loaded: " + data);     }); */