📜  JavaScript程序可随机播放纸牌(1)

📅  最后修改于: 2023-12-03 15:31:48.499000             🧑  作者: Mango

JavaScript程序可随机播放纸牌

在本篇文章中,我们将介绍如何使用JavaScript编写一个在程序中随机播放纸牌的程序。

程序实现思路

在实现程序之前,我们先了解一下程序实现的思路。

  1. 定义一幅以52张为基数的牌堆。

  2. 通过Math.random(),产生0到1之间的随机数

  3. 使用Math.floor()将随机数取整。

  4. 将取整后的随机数与牌堆长度进行取模运算,得到随机牌的下标。

  5. 将随机牌从牌堆中抽取,并将其通过DOM操作添加到页面中。

以下是程序实现的具体步骤:

代码实现
// 定义一幅以52张为基数的牌堆
const deck = [
  "Ace of Hearts",
  "2 of Hearts",
  "3 of Hearts",
  "4 of Hearts",
  "5 of Hearts",
  "6 of Hearts",
  "7 of Hearts",
  "8 of Hearts",
  "9 of Hearts",
  "10 of Hearts",
  "Jack of Hearts",
  "Queen of Hearts",
  "King of Hearts",
  "Ace of Clubs",
  "2 of Clubs",
  "3 of Clubs",
  "4 of Clubs",
  "5 of Clubs",
  "6 of Clubs",
  "7 of Clubs",
  "8 of Clubs",
  "9 of Clubs",
  "10 of Clubs",
  "Jack of Clubs",
  "Queen of Clubs",
  "King of Clubs",
  "Ace of Diamonds",
  "2 of Diamonds",
  "3 of Diamonds",
  "4 of Diamonds",
  "5 of Diamonds",
  "6 of Diamonds",
  "7 of Diamonds",
  "8 of Diamonds",
  "9 of Diamonds",
  "10 of Diamonds",
  "Jack of Diamonds",
  "Queen of Diamonds",
  "King of Diamonds",
  "Ace of Spades",
  "2 of Spades",
  "3 of Spades",
  "4 of Spades",
  "5 of Spades",
  "6 of Spades",
  "7 of Spades",
  "8 of Spades",
  "9 of Spades",
  "10 of Spades",
  "Jack of Spades",
  "Queen of Spades",
  "King of Spades"
];

// 获取页面中用于显示随机牌的元素
const cardDisplay = document.getElementById("card-display");

// 定义函数,用于产生随机牌并将其显示在页面上
function showRandomCard() {
  // 产生0-51之间的随机整数
  const randomNum = Math.floor(Math.random() * 52);
  // 获取随机牌
  const randomCard = deck[randomNum];
  // 使用DOM操作将随机牌添加到页面中
  const cardElement = document.createElement("div");
  cardElement.innerHTML = randomCard;
  cardDisplay.appendChild(cardElement);
}

// 为按钮添加点击事件处理函数,当点击按钮时显示随机牌
const button = document.getElementById("random-card-button");
button.addEventListener("click", showRandomCard);
结语

通过以上代码,我们实现了随机播放纸牌的程序。如果你对于JavaScript的掌握不够熟练,可以通过对代码逐行解析,以此更好的理解JavaScript语言的特性与应用。