How to Show Ajax Add To Cart Button On Custom Product Loop

if you want to add custom add to cart button in your shop page or custom loop you can use below code.

1. Enable This ‘Enable AJAX add to cart buttons on archives’ from WooCommerce Settings
2. Then Add this code where you want to show “Add To Cart” Button

<?php
echo sprintf('<a href="%s" data-quantity="1" class="%s" %s>%s</a>', 
esc_url($product->add_to_cart_url()), esc_attr(implode(' ', array_filter(array(
    'button',
    'product_type_' . $product->get_type(),
    $product->is_purchasable() && $product->is_in_stock() ? 'add_to_cart_button' : '',
    $product->supports('ajax_add_to_cart') ? 'ajax_add_to_cart' : ''
)))), wc_implode_html_attributes(array(
    'data-product_id' => $product->get_id(),
    'data-product_sku' => $product->get_sku(),
    'aria-label' => $product->add_to_cart_description(),
    'rel' => 'nofollow'
)), esc_html($product->add_to_cart_text()));
?>