Add Ajax modal popup to another button - ajax

Question

https://bpt9hyq9jz7t6wkd-26803830855.shopifypreview.com
On homepage, if you click on the cart button it'll show a popup of the cart, with what product was added, how many products are in the cart, etc. if you instead go here: https://bpt9hyq9jz7t6wkd-26803830855.shopifypreview.com/collections/all due to the fact that it is created with an app to improve filters, the button (both normal and quick view) is not connected to the modal popup. I've tried to figure it out, but while I can sorta understand Html and CSS, Ajax is new to me. I figured that this is the Ajax that calls upon the modal box? Any help would be appreciated:
initAddToCart: function() {
if (e(".add-cart-btn").length > 0) {
e(".add-cart-btn").click(function(n) {
n.preventDefault();
if (e(this).attr("disabled") != "disabled") {
var r = e(this).parents(".item-row");
var i = e(r).attr("id");
i = i.match(/\d+/g);
if (!window.ajax_cart) {
e("#cart-form-" + i).submit()
} else {
var s = e("#cart-form-" + i + " select[name=id]").val();
if (!s) {
s = e("#cart-form-" + i + " input[name=id]").val()
}
var o = e("#cart-form-" + i + " select[name=quantity]").val();
if (!o) {
o = 1
}
console.log(o);
var a = e(r).find(".featured-image").attr("src");
var p = e(r).find(".grid-link__title").text();
var amt = e(r).find(".grid-link__meta .product_price .grid-link__org_price span.money").text();
t.doAjaxAddToCart(s, o, a, p, amt)
}
}
return false
})
}
},
showLoading: function() {
e(".loading-modal").show()
},
hideLoading: function() {
e(".loading-modal").hide()
},
doAjaxAddToCart: function(n, r, a, p, amt) {
e.ajax({
type: "post",
url: "/cart/add.js",
data: "quantity=" + r + "&id=" + n,
dataType: "json",
beforeSend: function() {
t.showLoading()
},
success: function(n) {
t.hideLoading();
t.showModal(".ajax-success-modal");
e(".ajax-success-modal").find(".ajax-product-image").attr("src", a);
e(".ajax-success-modal").find(".added-to-wishlist").hide();
e(".ajax-success-modal").find(".added-to-cart").show();
e(".ajax-success-modal").find(".ajax-product-title").text(p);
e(".ajax-success-modal").find(".ajax_price").text(amt);
e(".ajax-success-modal").find(".ajax_qty").text(r);
e.ajax({
type: 'GET',
dataType: 'json',
url: '/cart.js',
success: function(cart){
e(".ajax-success-modal").find(".ajax_qtyA").text(cart.item_count);
}
});