使用Javascript提取JSON对象值/键而无需使用硬编码键

Question

 cart = {
 "Items": 3,
 "Item": {
      "Apple iPhone 5S": {
              "productId": 688,
              "url": "http://website.com/phone_iphone5s.html",
              "price": 299.99
        },
      "Solio Mono Solar Charger": {
              "productId": 655,
              "url": "http://website.com/solio_charger.html",
              "price": 29.95
        },
       "24 Month Warranty Package": {
              "productId": 681,
              "url": "http://website.com/24_month_warranty.html",
              "price": 129.95
        }
  },
"Total": 459.89
 }

我想编写一个JavaScript函数，该函数输出项目总数，带有价格的每个项目以及浏览器开发工具控制台中购物车的总价值。 例如： 需要选择Apple Iphone 5S及其价格，Solio Mono太阳能充电器及其价格等 。 无需使用硬编码键 （例如“ Apple iPhone 5S”，“ Solio Mono Solar Charger”）。 有什么办法吗??

是否有可能采用这种格式？

   Items: 3 
    - Apple iPhone 5S ($299.99) 
    - Solio Mono Solar Charger ($29.95) 
    - 24 Month Warranty Package ($129.95)
   Total: 459.89 

Answer 1

您在寻找这样的东西吗

var str = `Items: ${cart.Items} `;
Object.keys(cart.Item).forEach((key) => {
  str += `- ${key} (${cart.Item[key].price}) `
})

str +=  `Total: ${cart.Total}`
console.log(str)

 var cart = { "Items": 3, "Item": { "Apple iPhone 5S": { "productId": 688, "url": "http://website.com/phone_iphone5s.html", "price": 299.99 }, "Solio Mono Solar Charger": { "productId": 655, "url": "http://website.com/solio_charger.html", "price": 29.95 }, "24 Month Warranty Package": { "productId": 681, "url": "http://website.com/24_month_warranty.html", "price": 129.95 } }, "Total": 459.89 } var str = `Items: ${cart.Items} `; Object.keys(cart.Item).forEach((key) => { str += `- ${key} (${cart.Item[key].price}) ` }) str += `Total: ${cart.Total}` console.log(str) 

Answer 2

您可以遍历它们并像这样获取所需的数据。

您可以对其进行编辑以适合您的任何需求。

cart = {
 "Items": 3,
 "Item": {
      "Apple iPhone 5S": {
              "productId": 688,
              "url": "http://website.com/phone_iphone5s.html",
              "price": 299.99
        },
      "Solio Mono Solar Charger": {
              "productId": 655,
              "url": "http://website.com/solio_charger.html",
              "price": 29.95
        },
       "24 Month Warranty Package": {
              "productId": 681,
              "url": "http://website.com/24_month_warranty.html",
              "price": 129.95
        }
  },
"Total": 459.89
 }

for (var key in cart.Item) {
    if (cart.Item.hasOwnProperty(key)) {
        console.log(key + " " + cart.Item[key]);
    }
}