javascript - JSON，按totalSessionsPlayed排序并输出前3名

Question

我尝试按“totalSessionsPlayed”对 json 进行排序，然后将前 3 个输出到我的 div“show”中。

我认为只要我可以对 JSON 进行排序(我不知道该怎么做)，我就可以只输出前 3 个对象。

fiddle :https://jsfiddle.net/jzhang172/wjL0wL5b/1/

var homes =  [{
   "modifyDate": 1460338936000,
   "champions": [
      {
         "id": 40,
         "stats": {
            "totalDeathsPerSession": 11,
            "totalSessionsPlayed": 4,
            "totalDamageTaken": 62347,
            "totalQuadraKills": 0,
            "totalTripleKills": 0,
            "totalMinionKills": 57
           
         }
      },
      {
         "id": 75,
         "stats": {
            "totalDeathsPerSession": 6,
            "totalSessionsPlayed": 1,
            "totalDamageTaken": 44536,
            "totalQuadraKills": 0,
            "totalTripleKills": 0,
            "totalMinionKills": 222
         }
      },
      {
         "id": 113,
         "stats": {
            "totalDeathsPerSession": 18,
            "totalSessionsPlayed": 2,
            "totalDamageTaken": 104626,
            "totalQuadraKills": 0,
            "totalTripleKills": 0,
            "totalMinionKills": 94
         }
      },
      {
         "id": 9,
         "stats": {
            "totalDeathsPerSession": 30,
            "totalSessionsPlayed": 7,
            "totalDamageTaken": 174482,
            "totalQuadraKills": 0,
            "totalTripleKills": 0,
            "totalMinionKills": 239
         }
      },
      {
         "id": 254,
         "stats": {
            "totalDeathsPerSession": 9,
            "totalSessionsPlayed": 1,
            "totalDamageTaken": 27748,
            "totalQuadraKills": 0,
            "totalTripleKills": 0,
            "totalMinionKills": 26
         }
      }]
      }
      ];

document.getElementById('show').innerHTML=homes[0].champions[0].id + ' '+homes[0].champions[1].id+ ' '+homes[0].champions[2].id;

<div id="show"></div>

Answer 1

您可以使用以下代码对对象进行排序:

homes[0].champions.sort(function(a, b) {
    return parseFloat(a.stats.totalSessionsPlayed) - parseFloat(b.stats.totalSessionsPlayed);
});

对于降序排列，您需要切换a.stats.totalSessionsPlayed和b.stats.totalSessionsPlayed