Question

我从Web服务获取数据并根据收到的数据填充两个数组

price_table array = {
  "10": [{
    "_id": "59429018ff054c0001289199",
    "price": {
      "original": {
        "value": 10,
        "currency": "EUR",
        "_id": "59429018ff054c00012891a4"
      },
      "selling": {
        "value": 10,
        "currency": "EUR",
        "_id": "59429018ff054c00012891a3"
      },
      "allowProposals": false,
      "_id": "59429018ff054c00012891a2"
    },
    "eventId": "b6901f78-28bf-11e7-8534-985aebe2005e",
    "status": "ACTIVE",
    "__v": 0
  }],
  "35": [{
      "_id": "594290216f1127741550ea22",
      "price": {
        "original": {
          "value": 12,
          "currency": "EUR",
          "_id": "594290216f1127741550ea2d"
        },
        "selling": {
          "value": 35,
          "currency": "EUR",
          "_id": "594290216f1127741550ea2c"
        },
        "allowProposals": false,
        "_id": "594290216f1127741550ea2b"
      },
      "eventId": "b6901f78-28bf-11e7-8534-985aebe2005e",
      "status": "ACTIVE",
      "__v": 0
    },
    {
      "_id": "5942b36144d9f2cc788545e2",
      "price": {
        "original": {
          "value": 34,
          "currency": "EUR",
          "_id": "5942b36144d9f2cc788545ed"
        },
        "selling": {
          "value": 35,
          "currency": "EUR",
          "_id": "5942b36144d9f2cc788545ec"
        },
        "allowProposals": false,
        "_id": "5942b36144d9f2cc788545eb"
      },
      "eventId": "b6901f78-28bf-11e7-8534-985aebe2005e",
      "status": "ACTIVE",
      "__v": 0
    }
  ]
}

for (let price in price_table) {
   if (price_table.hasOwnProperty(price)) {
     ticketPrice.push(price.toString());
     ticketPriceData.push(price_table[price].length);
  }
}

这将生成两个数组，如下所示，

ticketPrice = ['10','13'];
ticketPriceData = [1,2];

现在我生成的ticketPrice数组缺少值，其中mintocal为10，maxtocal为13

while (mintocal < maxtocal) {
  if (ticketPrice.indexOf(mintocal.toString()) === -1) {
    ticketPrice.push(mintocal.toString());
    ticketPriceData.push(0);
  }
  mintocal++;
}

这会生成数组

ticketPrice数组为

["10","13","11","12"]

和ticketPriceData为

[1,2,0,0]

我真正想要的是

输出预期：

ticketPrice ：[“10”，“11”，“12”，“13”]

ticketPriceData ：[1,0,0,2]

Answer 1

您要做的是创建一个新数组，因为您拥有的数组已经填充了值。你需要做的是：

var ticketPrice = [];
var ticketPriceData = [];

while (mintocal < maxtocal) {
  var index = ticketPrice.indexOf(mintocal.toString());

  newTicketPrice.push(mintocal.toString());
  newTicketPriceData.push((index === -1) ? 0 : ticketPriceData[index]);

  mintocal++;
}

我们在这里做的是推送ticketPriceData值（如果它存在于原始数组中，如果不存在则为0。

在您的解决方案中，数组['10','13']被推送＆＃39; 11＆＃39;结果为['10', '13', '11']，然后推送'12'，结果为['10','13','11', '12']

如果您希望解决方案在不创建新阵列的情况下工作，则可以在看到它时从两个阵列中删除该值并在最后重新插入它。这将是这样做的：

while (mintocal < maxtocal) {
  var i = ticketPrice.indexOf(mintocal.toString());
  if (i === -1) {
    ticketPrice.push(mintocal.toString());
    ticketPriceData.push(0);
  } else {
    var value = ticketPrice.splice(i,1);
    var data = ticketPriceData.splice(i,1);
    ticketPrice.push(value);
    ticketPrice.push(data);
  }
  mintocal++;
}

将值放在正确的索引处

1 个答案: