如何在 javascript 函数/循环中创建多个布尔值？

Question

我有这段代码：

function restrictListProducts(prods, restriction) {
    let product_names = [];
    for (let i=0; i<prods.length; i+=1) {
        if ((restriction == "Vegetarian") && (prods[i].vegetarian == true)) {
            product_names.push(prods[i].name);
        }
        else if ((restriction == "GlutenFree") && (prods[i].glutenFree == true)){
            product_names.push(prods[i].name);
        }
        else if (restriction == "None"){
            product_names.push(prods[i].name);
        }
    }
    return product_names;
}

用户输入他们的饮食限制并显示可用食物列表。 还询问用户是否希望他们的食物是有机的。 我应该如何修改这个 function 以便考虑到有机食品，因为所有当前类别（素食、GF 等）都可以是有机和非有机的。

产品是这样组织的：

var products = [
    {
        name: "brocoli",
        vegetarian: true,
        glutenFree: true,
        organic: true,
        price: 1.99
    },

Answer 1

为什么不将限制用作具有相同命名字符串的数组，就像它们对应的产品键一样。

因为Array#every为空的 arrays 返回true ，所以没有任何内容。

selection = products.filter(product => restrictions.every(k => product[k]));

 const products = [{ name: "broccoli", vegetarian: true, glutenFree: true, organic: true, price: 1.99 }, { name: "matso", vegetarian: true, glutenFree: true, organic: false, price: 1.99 } ] const getSelection = (products, restrictions) => { return products.filter(product => restrictions.every(k => product[k])); }; console.log(getSelection(products,["vegetarian","organic"])) console.log(getSelection(products,["vegetarian","glutenFree"]))