How to Display Product qty in Popup

Question

I want to display Magento product qty in the popup. when the customer clicks on add to cart button the popup shows the product available in stock and if the product is not available popup displays the product not available in stock.

Answer 1

First, you have to get stockItem with product id. So you have to add the getStockItem function in Helper.

public function __construct(...
\Magento\CatalogInventory\Api\StockRegistryInterface $stockItemRepository,
...){
...
$this->stockItemRepository = $stockItemRepository;
...
}
public function getStockItem($productId)
    {
        return $this->stockItemRepository->getStockItem($productId);
    }

And get the Qty with product Id.

$qty = $yourHelper->getStockItem($_product->getId())->getQty();