Amazon の WishList の総額出し太郎

wl_sum.js

(() => {
    const reducer = (accumulator, currentValue) => accumulator + currentValue;
    const items = Array.from(document.getElementById("wl-item-view").getElementsByClassName("a-price-whole"))
        .map(item => item.innerHTML.replace(",", ""))
        .map(str =>  parseInt(str));
    const total = items.reduce(reducer);
    return items.length.toLocaleString() + " items, " + total.toLocaleString() + " yen"
})();