Question

我需要一点帮助。我试图保存用户信息，例如完整的卡号，后四位数字和唯一ID，以便可以使用提取请求来更新它。我在单独的数组中推送此信息。它工作正常，现在给出错误Client id is in invalid TypeError: card_last_digit.push(...).slice is not a function

我正在开发语音机器人项目，并且将卡的最后四位存储在一个阵列中。当用户说出他的最后四位数字时，在将后四位数字与用户卡匹配后，我得到唯一ID的索引。

如何使用Object实现这一目标。这种方法很麻烦，但是效果很好。请指教谢谢

  "objects": [
  {
      "card_number": "3348721238415678",
      "created_at": "2018-10-07T06:42:05.768545",
      "cust_id": "32892",
      "id": 7,
      "resource_uri": "/api/card/7/",
      "status": "active"
  },
  {
      "card_number": "9878675683213843",
      "created_at": "2018-10-09T04:48:18.296061",
      "cust_id": "32892",
      "id": 11,
      "resource_uri": "/api/card/11/",
      "status": "active"
  }
    ];

 let user_cards = [];
 let card_last_digit = [];
 let unique_cust_id = [];
 for (let key in val) {
   user_cards.push(val[key].card_number);
   card_last_digit.push(val[key].card_number).slice(-4);
   unique_cust_id.push((val[key].id));
 }

Answer 1

 var val = {    "objects": [
     {
        "card_number": "3348721238415678",
        "created_at": "2018-10-07T06:42:05.768545",
        "cust_id": "32892",
        "id": 7,
       "resource_uri": "/api/card/7/",
       "status": "active"
   },
    {
      "card_number": "9878675683213843",
      "created_at": "2018-10-09T04:48:18.296061",
       "cust_id": "32892",
       "id": 11,
       "resource_uri": "/api/card/11/",
       "status": "active"
   }
   }
 var user_cards = [];
 var card_last_digit = [];
 var unique_cust_id = [];
 for (var key in val) {
 var obj = val[key];
 obj.forEach(function(value, index, array) {
    user_cards.push(obj[index].card_number);
 card_last_digit.push(obj[index].card_number.slice(-4));
 unique_cust_id.push((obj[index].id));
});

console.log(user_cards);
 console.log(card_last_digit);
console.log(unique_cust_id);
}

Answer 2

如果您只想基于信用卡号的后四位数字获取卡对象，则更好的方法可能是存储后四位数字到卡对象的映射。这样，您可以通过密钥访问直接获得该卡：

let cards = [{
    "card_number": "3348721238415678",
    "created_at": "2018-10-07T06:42:05.768545",
    "cust_id": "32892",
    "id": 7,
    "resource_uri": "/api/card/7/",
    "status": "active"
  },
  {
    "card_number": "9878675683213843",
    "created_at": "2018-10-09T04:48:18.296061",
    "cust_id": "32892",
    "id": 11,
    "resource_uri": "/api/card/11/",
    "status": "active"
  }
];

let cardMapping = {};
cards.forEach(card => {
  let lastFourDigits = card.card_number.slice(card.card_number.length - 4);
  cardMapping[lastFourDigits] = card;
});

console.log(cardMapping); // key is last four digits, value is card object
console.log(cardMapping["5678"]); // get card directly from last four digits

嵌套异议迭代Javascript

2 个答案: