如何在php的同一页面上从ajax获取价值

Question

I want to get value from ajax on same page i used html php and javascript

<script>
$(document).ready(function() {
    $('#godown').change(function() {
        var gownid = $(this).val();
        alert(gownid);
        $.ajax({
            url: '../inc/safedispatch_detail.class.php',
            method: 'GET',
            data: {gownid:gownid},
            success: function(result){
            }
        });
    })
});


</script>

and my php code is:

echo $_POST['gownid'];

showing me blank output. Please guide whats wrong in this

Answer 1

Your method is GET so if your code is :

echo $_POST['gownid'];

It will not work ;)

• change your method to POST or your php code to

  echo $_GET['gownid'];

• then you can test the value returned with developper tools or :

  success: function(result) { alert(result); }

or

success: function(result) {
console.log(result);
}

• if the result is what you expect, you can ie write the php returned html in your html page ie

  success: function(result) { $('#myid').text(result); // for ap paragraph field }

or

success: function(result) {
$('#myid').val(result); // for an input field
}

Answer 2

What is good with js ajax request is to have your method type as 'POST'.

so if in your jquery change event your alert is not empty then in your php it will just work fine.