auto_add.bestbuy.js

add.js

function tryToAdd(sku) {
  const audio = new Audio('https://interactive-examples.mdn.mozilla.net/media/examples/t-rex-roar.mp3');
  const intId = setInterval(() => {
    fetch("https://www.bestbuy.com/cart/api/v1/addToCart", {
      "credentials": "include",
      "headers": {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0",
        "Accept": "application/json",
        "Accept-Language": "en-US,en;q=0.5",
        "Content-Type": "application/json; charset=UTF-8"
      },
      "referrer": `https://www.bestbuy.com/site/apple-airpods-with-charging-case-latest-model-white/${sku}.p?skuId=${sku}`,
      "body": `{\"items\":[{\"skuId\":\"${sku}\"}]}`,
      "method": "POST",
      "mode": "cors"
    }).then(res => {
      if (res.ok) {
        clearInterval(intId);
        audio.play();
        location.href = 'https://www.bestbuy.com/checkout/r/fulfillment';
      } else {
        console.log('NO LUCK');
      }
    });
  }, 200);
}

tryToAdd(6364255);
tryToAdd(6364253);