JSON object does not update correctly - html

Question

First of all, I'm not sure if my title describes the problem correctly... I did search but didn't find anything that helped me out...
The project I'm working on has an #orderList. All orders have a delete option. After an order gets deleted the list is updated.
Sounds simple... I ran into a problem though.
/**
* Data returned at the end of selecting some options
*/
$.post(myUrl, $('#myForm').serialize(), function(data) {
// I build the orderlist
// The data returned is a JSON object holding session data (including orders)
buildOrderList(data);
...
// Do some other work
});
/*
* function to build the html list
*/
function buildOrderList(data) {
// Empty list
$('#orderList').empty();
// The click handler for the delete button is in here because it needs the data object
$(document).on('click', '[id^=delete_]', function() {
// Get the orderId from the delete button
var orderId = $(this).attr('id').split('_');
orderId = orderId['1'];
// I call the delete function
deleteOrder(orderId, data);
});
var html = '';
// Loop the data object
$.each(data, function(key,val){
...
// Put html code needed in var html
...
});
$('#orderList').append(html);
}
/*
* function to delete an order
*/
function deleteOrder(orderId, data) {
// Because of it depends on other 'products' in the list if the user can
// simply delete it, I use a jQuery dialog to give him some options.
// These options I send to a php script so it knows what should be deleted.
// This fires when a user clicks on the 'delete' button from a dialog.
// The dialog uses data to show options but does not change the value of data.
switch(data.type) {
case 'A':
delMsg += '<p>Some message for case A</p>';
delMsg += '<select>with some options for case A</select>';
$('#wizard_dialog').append(delMsg);
$('#wizard_dialog').dialog('option', 'buttons', [
{ text: "Delete", click: function() {
$.post(myUrl, $('#myDeleteOptions').serialize(), function(newData) {
// Now the returned data is the updated session data
// So I build the orderList again...
buildOrderList(newData);
...
// Do some other work
});
$( this ).dialog( "close" );
$(this).html(''); }},
{ text: "Cancel", click: function() { $( this ).dialog("close"); $(this).html(''); }}
] );
break;
case 'B':
// Do the same thing but different text and <select> elements
break;
}
}
The orderList updates correctly, however if I try to delete another order, the jQuery dialog gives me the option for the current (correct product) AND the option for the product that previously owned the id of the current. (Hope I didn't loose anyone in my attempt to explain the problem)
The main question is how to 'refresh' the data send to buildOrderList.
Since I call the function in a new $.post with fresh data object returned it should work, shouldn't it?
/**
* Enable the JQuery dialog
* (#wizard_dialog)
* this is the init (note that I only open the dialog in deleteOrder() and set text and buttons according to the data send to deleteOrder() )
*/
$('#wizard_dialog').dialog({
autoOpen: false,
resizable: false,
modal: true,
dialogClass: "no-close",
open: function() {
$('.ui-dialog-buttonpane').find('button:contains("Annuleren")').addClass('cancelButtonClass');
$('.ui-dialog-buttonpane').find('button:contains("Verwijderen")').addClass('deleteButtonClass');
$('.ui-dialog :button').blur(); // Because it is dangerous to put focus on 'OK' button
$('.ui-widget-overlay').css('position', 'fixed'); // Fixing overlay (else in wrong position?)
if ($(document).height() > $(window).height()) {
var scrollTop = ($('html').scrollTop()) ? $('html').scrollTop() : $('body').scrollTop(); // Works for Chrome, Firefox, IE...
$('html').addClass('noscroll').css('top',-scrollTop); // Prevent scroll without hiding the bar (thus preventing page to shift)
}
},
close: function() {
$('.ui-widget-overlay').css('position', 'absolute'); // Brake overlay again
var scrollTop = parseInt($('html').css('top'));
$('html').removeClass('noscroll'); // Allow scrolling again
$('html,body').scrollTop(-scrollTop);
$('#wizard_dialog').html('');
}
});
EDIT:
Because the problem could be in the dialog I added some code.
In the first code block I changed deleteOrder();
ANSWER
The solution was rather simple. I forgot to turn the click handler off before I added the new one. This returned the previous event and the new event.
$(document).off('click', '[id^=delete_]').on('click', '[id^=delete_]', function() {
// Get the orderId from the delete button
var orderId = $(this).attr('id').split('_');
orderId = orderId['1'];
// I call the delete function
deleteOrder(orderId, data);
});