在JavaScript中對JSON進行排序

我知道之前有人問過類似的問題，我在這里提到了這個問題：在 javascript 中對 json 物件進行排序，但我仍然找不到我的問題的答案。所以我來了。我有一個 JSON 物件結構，如下所示：

 [
  {
    "toothNumber": "01",
    "name": "John"
  },
  {
    "toothNumber": "18",
    "name": "John"
  },
  {
    "toothNumber": "19",
    "name": "John"
  },
  {
    "toothNumber": "17",
    "name": "John"
  },
  {
    "toothNumber": "01,32",
    "name": "John"
  },
  {
    "toothNumber": "25,32",
    "name": "John"
  },
  {
    "toothNumber": "",
    "name": "John"
  },
  {
    "toothNumber": "15",
    "name": "John"
  }
]

當我使用下面的代碼進行排序時，我沒有得到預期的結果：

json.sort(function(a, b){
    return a.toothNumber - b.toothNumber;
});

下面是實際結果，這不是我所期望的。任何幫助將不勝感激。

實際結果：

[
  {
    "toothNumber": "",
    "name": "John"
  },
  {
    "toothNumber": "01",
    "name": "John"
  },
  {
    "toothNumber": "15",
    "name": "John"
  },
  {
    "toothNumber": "17",
    "name": "John"
  },
  {
    "toothNumber": "18",
    "name": "John"
  },
  {
    "toothNumber": "19",
    "name": "John"
  },
  {
    "toothNumber": "01,32",
    "name": "John"
  },
  {
    "toothNumber": "25,32",
    "name": "John"
  }
]

預期結果：

[
    {
        "toothNumber": "",
        "name": "John"
    },
    {
        "toothNumber": "01",
        "name": "John"
    },
    {
        "toothNumber": "01,32",
        "name": "John"
    },
    {
        "toothNumber": "15",
        "name": "John"
    },
    {
        "toothNumber": "17",
        "name": "John"
    },
    {
        "toothNumber": "18",
        "name": "John"
    },
    {
        "toothNumber": "19",
        "name": "John"
    },
    {
        "toothNumber": "25,32",
        "name": "John"
    }
]

uj5u.com熱心網友回復：

用字串排序，而不是數字比較。

const json = [  {    "toothNumber": "01",    "name": "John"  },  {    "toothNumber": "18",    "name": "John"  },  {    "toothNumber": "19",    "name": "John"  },  {    "toothNumber": "17",    "name": "John"  },  {    "toothNumber": "01,32",    "name": "John"  },  {    "toothNumber": "25,32",    "name": "John"  },  {    "toothNumber": "",    "name": "John"  },  {    "toothNumber": "15",    "name": "John"  }];

json.sort(function(a, b){
    return a.toothNumber > b.toothNumber ? 1 : (a.toothNumber === b.toothNumber ? 0 : -1 );
});

console.log(json);

uj5u.com熱心網友回復：

你可以這樣做

const json = [  {    "toothNumber": "01",    "name": "John"  },  {    "toothNumber": "18",    "name": "John"  },  {    "toothNumber": "19",    "name": "John"  },  {    "toothNumber": "17",    "name": "John"  },  {    "toothNumber": "01,32",    "name": "John"  },  {    "toothNumber": "25,32",    "name": "John"  },  {    "toothNumber": "",    "name": "John"  },  {    "toothNumber": "15",    "name": "John"  }];

json.sort(function(a, b) {
   return a.toothNumber.split(",")[0] - b.toothNumber.split(",")[0];
});

console.log(json)

標籤：javascript json 排序 javascript对象

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