在对对象数组内的数字进行排序时，JavaScript 排序无法按预期工作

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How to sort an array of integers correctly (32 个回答)

Javascript sort an array of objects based on numeric key (4 个回答)

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已关闭 4 年前。

我试图按对象内部的属性对对象数组进行排序，而 js 没有很好地对其进行排序。这是我使用的代码和我尝试排序的数组:

const json = [ 
  { code: '40828',
    distance: { text: '2.3 km', value: 2309 },
    duration: { text: '14 mins', value: 831 },
  },
  { code: '43343',
    distance: { text: '35.4 km', value: 35432 },
    duration: { text: '1 hour 27 mins', value: 5242 },
  },
  { code: '40539',
    distance: { text: '26.1 km', value: 26134 },
    duration: { text: '1 hour 38 mins', value: 5885 },
  },
  { code: '4840',
    distance: { text: '2.3 km', value: 2340 },
    duration: { text: '17 mins', value: 1044 },
  },
  { code: '32725',
    distance: { text: '6.2 km', value: 6218 },
    duration: { text: '34 mins', value: 2011 },
  },
  { code: '39608',
    distance: { text: '3.6 km', value: 3620 },
    duration: { text: '22 mins', value: 1299 },
  },
  { code: '50913',
    distance: { text: '4.7 km', value: 4707 },
    duration: { text: '35 mins', value: 2112 },
  },
  { code: '43879',
    distance: { text: '10.1 km', value: 10065 },
    duration: { text: '49 mins', value: 2938 },
  },
  { code: '35606',
    distance: { text: '3.0 km', value: 2965 },
    duration: { text: '19 mins', value: 1168 },
  },
  { code: '4377',
    distance: { text: '4.5 km', value: 4524 },
    duration: { text: '24 mins', value: 1439 },
  },
  { code: '41519',
    distance: { text: '23.9 km', value: 23940 },
    duration: { text: '1 hour 5 mins', value: 3872 },
  }
]

console.log(json.sort((a, b) => a.duration.value > b.duration.value));

我正在尝试按 distance.value 对其进行排序我得到这个结果:

[ { code: '39608',
    distance: { text: '3.6 km', value: 3620 },
    duration: { text: '22 mins', value: 1299 } },
  { code: '40828',
    distance: { text: '2.3 km', value: 2309 },
    duration: { text: '14 mins', value: 831 } },
  { code: '4840',
    distance: { text: '2.3 km', value: 2340 },
    duration: { text: '17 mins', value: 1044 } },
  { code: '35606',
    distance: { text: '3.0 km', value: 2965 },
    duration: { text: '19 mins', value: 1168 } },
  { code: '4377',
    distance: { text: '4.5 km', value: 4524 },
    duration: { text: '24 mins', value: 1439 } },
  { code: '32725',
    distance: { text: '6.2 km', value: 6218 },
    duration: { text: '34 mins', value: 2011 } },
  { code: '50913',
    distance: { text: '4.7 km', value: 4707 },
    duration: { text: '35 mins', value: 2112 } },
  { code: '43879',
    distance: { text: '10.1 km', value: 10065 },
    duration: { text: '49 mins', value: 2938 } },
  { code: '41519',
    distance: { text: '23.9 km', value: 23940 },
    duration: { text: '1 hour 5 mins', value: 3872 } },
  { code: '43343',
    distance: { text: '35.4 km', value: 35432 },
    duration: { text: '1 hour 27 mins', value: 5242 } },
  { code: '40539',
    distance: { text: '26.1 km', value: 26134 },
    duration: { text: '1 hour 38 mins', value: 5885 } } ]

所以结果数组中的所有内容看起来都很好(并且排序良好)，除了第一个元素，我想理解为什么？值 831 应该是数组中的第一个，但由于某种原因是第二个，第一个是 1299。任何人都可以解释一下，也许我做错了什么？

提前致谢🍻

Answer 1

您很接近，但您的排序略有偏差。该排序不会查找 bool 返回类型，而是查找整数。所以你需要像这样修改它: json.sort((a,b) => a.distance.value - b.distance.value);