cart codeigniter

Dude! Modularize your code! It's close to impossible to follow what is going on

dear albertleao

here is the main code for increase and decrease the quantity, but its not working..

function minquantity(rowid){
var minquan = parseInt($('#txtquantity_' + rowid).val()) - 1;
if(minquan > 0) {
//alert(quan);
$.ajax({
type: "POST",
url: "<?php echo base_url();?>ajax",
data: { action: "product_model.update_cart", row_id: rowid, new_qty: minquan}
}).done(function( msg ) {
var total = parseInt(msg);
if(total > 0){
$('#cart_count').html(total);
$('#txtquantity_'+rowid).val(minquan);
}
});

}
}

function plusquantity(rowid){
var plusquan = parseInt($('#txtquantity_' + rowid).val()) + 1;
//alert(quan);
$.ajax({
type: "POST",
url: "<?php echo base_url();?>ajax",
data: { action: "product_model.update_cart", row_id: rowid, new_qty: plusquan}
}).done(function( msg ) {
var total = parseInt(msg);
if(total > 0){
$('#cart_count').html(total);
$('#txtquantity_' + rowid).val(plusquan);
}
});
}

udin_ordinary