如何使用Shopify BuyButton.js为特定产品变体创建立即购买按钮

<script type="text/javascript" src="https://sdks.shopifycdn.com/buy-button/latest/buy-button.min.js"></script>

<div id="buy-button-container"></div>

buyButton.render({
  "containerId": "buy-button-container",
  "productId": "your-product-id",
  "variantId": "your-variant-id",
  "locale": "en-US",
  "currency": "USD",
  "buttonColor": "black",
  "buttonType": "submit",
  "showQuantitySelector": false,
  "quantitySelectorMax": 10,
  "showBillingAddress": true,
  "showShippingAddress": true,
  "shippingMethods": [
    {
      "methodId": "standard",
      "methodName": "Standard Shipping",
      "methodPrice": 0
    }
  ],
  "paymentMethods": [
    {
      "methodId": "credit_card",
      "methodName": "Credit Card"
    }
  ]
});