从数组中删除随机项并推送到新数组答案

【问题标题】：Remove random item from array and push to new array从数组中删除随机项并推送到新数组
【发布时间】：2020-05-10 20:51:42
【问题描述】：

提前感谢您！我是编码和学习如何处理数组的新手。我正在尝试从数组（卡片组）中删除随机项目，并填充一个新数组（称为手）。我似乎总是遇到数组的问题是获取一个的结果并创建一个新的函数/数组/等。目前，我正在输出 2 个单独的数组，我似乎无法将它们推入一个。

let deck = ["dA","dQ","dK","dJ","d10","d09","d08",
"d07","d06","d05","d04","d03","d02","hA","hQ","hK",
"hJ","h10","h09","h08","h07","h06","h05","h04","h03"];


var hand = deck.splice(Math.floor(Math.random()*deck.length),1);
    console.log(hand)
var hand = deck.splice(Math.floor(Math.random()*deck.length),1);
console.log(hand);

【问题讨论】：

标签： arrays array-splice

【解决方案1】：

在您的代码中，您只需要推送从splice 方法返回的值，而不是直接分配它。通过这种方式，每次都会删除一个新值并将其添加到名为hand 的新数组中。希望这可以帮助。 :-)

let deck = ["dA","dQ","dK","dJ","d10","d09","d08",
        "d07","d06","d05","d04","d03","d02","hA","hQ","hK",
        "hJ","h10","h09","h08","h07","h06","h05","h04","h03"];

var hand = [];

const getSelectedCard = () => deck.splice(Math.floor(Math.random()*deck.length),1)

let selectedCard = getSelectedCard();
hand.push(...selectedCard) //or hand.push(selectedCard[0])
console.log(hand);

selectedCard = getSelectedCard();
hand.push(...selectedCard)
console.log(hand);

【讨论】：

我很高兴它有帮助:-)。我很乐意提供帮助。快乐的编码:-) 事实上，这个解决方案可以通过创建多种方法和所有方法来更加简化。但我不想通过提供所有这些东西来混淆。让我知道我是否可以提供帮助
感谢您保持简单。我必须对箭头函数做一点阅读才能完全理解箭头函数的使用。再次感谢。
看看this，让初学者更好地理解箭头函数。
这很有帮助。简单但能解释透彻。