如何用名称排序数组？

Question

我正在尝试用名称对对象数组进行排序。

工作片段：

​

const data = [
   {
      "title":"Smart S",
      "tariff_id":"1301"
   },
   {
      "title":"Smart M",
      "tariff_id":"1306"
   },
   {
      "title":"Smart L",
      "tariff_id":"1303"
   },
   {
      "title":"Start",
      "tariff_id":"1304"
   },
   {
      "title":"Smart  6",
      "tariff_id":"1305"
   },
   {
      "title":"Ausland",
      "tariff_id":"888888",
   },
   {
      "title":"Länderzone",
      "tariff_id":"999999",
   }
];

//Filtering the data by removing the unwanted data
const newTariffs = (data || []).filter((tariff) =>
          tariff?.tariff_id != 888888 && tariff?.tariff_id != 999999
);

// Need to sort in this order
const tariffOrder = ["Start", "Smart S", "Smart M", "Smart L", "Smart 6"]; 

//Sort code that have been tried
const sortedTariffs = (newTariffs || []).sort((a, b) =>
    tariffOrder.indexOf(a.title) > tariffOrder.indexOf(b.title) ? 1 : -1
);


console.log("sortedTariffs ", sortedTariffs);

​

从上面的数据来看，要求是，

->需要删除两个id最高的项，即.、888888和999999 (已使用的筛选方法)

然后，->需要根据关税订单对新筛选的数组进行排序，

"Start", "Smart S", "Smart M", "Smart L", "Smart 6"

当前结果：

[{"title":"Smart 6","tariff_id":"1305"},{"title":"Start","tariff_id":"1304"},{"title":"Smart S","tariff_id":"1301"},{"title":"Smart M","tariff_id":"1306"},{"title":"Smart L","tariff_id":"1303"}]

预期结果：

[{"title":"Start","tariff_id":"1304"},{"title":"Smart S","tariff_id":"1301"},{"title":"Smart M","tariff_id":"1306"},{"title":"Smart L","tariff_id":"1303"}, {"title":"Smart 6","tariff_id":"1305"}]

Answer 1

您需要像这样更改顺序以获得升序或排序。

var sortedTariffs = newTariffs.sort((a, b) =>
    (a.title < b.title) - (a.title > b.title)
);

Answer 2

按标题排序：

const sortedTariffs = (newTariffs || []).sort((a, b) =>
    a.title.localeCompare(b.title)
);

localeCompare将比较两个字符串并返回-1或1，正如排序所期望的那样。

编辑：

再看完这个问题后，我误解了他的意思。您遇到的问题是字符串"Smart 6“有两个空格而不是1个，所以indexOf()返回-1，并且放在第一个位置