<script>
$('#form_submit').click(function(){
   $.ajax({
        type: 'post',
        url: 'process.php',
        success: function(data){
            alert(data);
        }
   });
    return false; //<- 이 문장으로 새로고침(reload)이 방지됨
});

</script>

<script>
 $.ajax({
   type: "POST",
   url: "some.php",
   data: "name=John&location=Boston",
   success: function(msg){
     alert( "Data Saved: " + msg );
   }
 });

</script>

<script>
$(document).ready(function(){
    $("#b_vote1").click(
        function(){   
            if($("input[name=type_team1]:radio:checked").length == 0){
                alert("TEAM CHECK FIRST!");
            } else{
                var msg1 = $(':radio[name="type_team1"]:checked').val();
                var vals1 = $('#match_id1').val();     
   
                $.post("http://www.ognlol.com/league_vote/add_vote", {team_val: msg1, match_id_val: vals1}, function(html) {
                $('#predict_con1').html(html);
                })
            }           
        }
    );
});
</script>

AJAX 기본, jquery