Send ajax - check and confirm - php

Question

how can i make ajax to check first for result and if any result found to ask for confirm and than to do something ?
$(".btn-delete").click(function(){
var url = "index.php?route=catalog/product/delete&user_token={{user_token}}";
var id = $('input[name*=\'selected\']:checked');
$.ajax({
url: url,
data: id,
dataType: 'json',
success: function(data){
}
});
});
Controller:
if (isset($this->request->post['selected']) && $this->validateDelete()) {
foreach ($this->request->post['selected'] as $product_id) {
$this->model_catalog_product->deleteProduct($product_id);
}
Model:
public function deleteProduct($product_id) {
$checkPreporuchaniProducts = $this->db->query("SELECT product_id FROM oc_preporuchani_category");
$checkid = array();
foreach ($checkPreporuchaniProducts->rows as $PreporuchaniProducts) {
$getId = unserialize($PreporuchaniProducts['product_id']);
foreach ($getId as $id) {
if ($product_id == $id) {
echo "yes: $id<br>";
}else {
echo "no: $id<br>";
}
}
}

Answer 1

Actually i did it with 2 ajax one that check result and another to confirm
$(".btn-delete").click(function(){
var urlcheck = "index.php?route=catalog/product/checkBeforeDelete&user_token={{user_token}}";
var urldelete = "index.php?route=catalog/product/delete&user_token={{user_token}}";
var urldeleteSpecial = "index.php?route=catalog/product/deleteSpecial&user_token={{user_token}}";
var id = $('input[name*=\'selected\']:checked');
$.ajax({
url: urlcheck,
data: id,
type: 'POST',
dataType: 'json',
success: function(data){
if (data.delete == null) {
if (confirm("This product is not used you can delete it")) {
$.ajax({
url: urldelete,
data: id,
type: 'POST',
dataType: 'json',
});
}
}else {
if (confirm("!!! WARNING: Product is used as SPECIAL if delete will effect other system as well !!!")) {
$.ajax({
url: urldeleteSpecial,
data: id,
type: 'POST',
dataType: 'json',
});
}
}
}
})