php - display data via ajax when using $_GET -

how display data based on `$_get', without refreshing page ?

i have example, , shows correct result whenever click add (increments 1), of course first refreshes page.

how make same thing without visible page refresh, using ajax?

php , html

if (isset($_get['add'])) {     $_session['numbers']++; }  echo $_session['numbers'];  ?> <br> <a href="test.php?add" class="add">add</a>  <div id="response"></div> 

and if example wanted pull database via post , print it, this:

$.post('print_something.php', function(response) {      $('#response').html(response); });  

but how change get, since there stuff in url plus sessions?

edit:

i tried this, removed php current script, added get.php this:

session_start();  if (isset($_get['add'])) {     $_session['numbers']++; }  echo $_session['numbers']; 

and inside main index script have this:

$('a.add').click(function() {     $.get('get.php', function(response) {         $('#response').html(response);      });     return false; }); 

now not increment each time click add, shows 1 first time , doesn't change afterwards.

you not passing add parameter $.get, isset($_get['add']) false. add add ajax call

$.get('get.php', {add:true}, function(response) {     $('#response').html(response);  }); 

i put {add:true}, true anything, checking if set, not value

alternatively, add url

$.get('get.php?add=true', function(response) {     $('#response').html(response);  });