javascript - 如何从维数组中获取最大值以及文本/名称？

Question

我有一个维度“dataArray”，如下所示。

dataArray = [ {name:"Apples", score: 3.5}, {name:"Oranges", score: 3.7}, {name:"Grapes", score: 4.1} ];

想从 dataArray 中获得最高分和名字吗？

function playerArray() {

  dataArray = [{
    name: "Apples",
    score: 3.5
  }, {
    name: "Oranges",
    score: 3.7
  }, {
    name: "Grapes",
    score: 4.1
  }];

  for (i = 0; i < dataArray.length; i++) {
    var nameArray = dataArray[0].name;
    var scoreArray = dataArray[0].score;

    var largest = Math.max.apply(Math, scoreArray);

    alert(largest[0].score);
  }
}

在执行“playerArray()”时会抛出以下错误:test.html:24 Uncaught TypeError: CreateListFromArrayLike 在非对象上调用 在播放器数组

Answer 1

您可以使用 Array.reduce()

let dataArray = [ {name:"Apples", score: 3.5}, {name:"Oranges", score: 3.7}, {name:"Grapes", score: 4.1} ];

let max = dataArray.reduce((acc,elem) => { return elem.score > acc.score ? elem : acc }, {name: "", score: -1});

console.log(max);