javascript - 查找对象是否具有特定属性和真理的最快方法？

我想用javascript做简单但需要最快的方法：

我有这个数组：

   players: [{
       isInjured : false,
       name: ...
       stamina : 50
   },{
       isInjured : true,
       name: ...,
       stamina : 20
   }
   ...
]

我想以最快最好的方式做两件事：

1）如果我在数组中的“ injured”属性为true，对任何人。

2）我想提取3个最低耐力球员，并提取其中一个的关键。

如果可能的话，我想避免为此做2次forEach，那么最好的方法是什么？

最佳答案

var players = [{
  isInjured: false,
  stamina: 50
}, {
  isInjured: false,
  stamina: 10
}, {
  isInjured: false,
  stamina: 15
}, {
  isInjured: false,
  stamina: 16
}, {
  isInjured: true,
  stamina: 20
}];



// Your second request you can do with lodash or underscore easily

var threePlayersWithMinStamina = _.take(_.sortBy(players, function(player) {
  return player.stamina;
}), 3);

console.log(threePlayersWithMinStamina) // you have the three players with the min stamina

//Your first request
// the var isOneInjured will be true if the condition will be true and stop the loop
var isOneInjured = players.some(function(player) {
  return player.isInjured;
});

<script src="https://cdn.rawgit.com/lodash/lodash/3.0.1/lodash.min.js"></script>