解释 JavaScript 中的枚举类型。

javascriptweb developmentobject oriented programming更新于 2025/8/26 17:48:17

JavaScript 不支持开箱即用的枚举。在 javaScript 中拥有枚举的唯一方法是使用对象来实现它们。

以下是显示 JavaScript 中枚举类型的代码 −

示例

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
   body {
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
   }
   .result {
      font-size: 18px;
      font-weight: 500;
      color: rebeccapurple;
   }
</style>
</head>
<body>
<h1>Enumerated Types in JavaScript</h1>
<div class="result"></div>
<button class="btn">点击此处</button>
<h3>Click on the above button to get the color values</h3>
<script>
   let resEle = document.querySelector(".result");
   let color = {
      orange: 1,
      red: 2,
      green: 3,
      blue: 4,
      pink: 5,
   };
   document.querySelector(".Btn").addEventListener("click", () => {
      resEle.innerHTML += "color.orange = " + color.orange + "<br>";
      resEle.innerHTML += "color.red = " + color.red + "<br>";
      resEle.innerHTML += "color.green = " + color.green + "<br>";
      resEle.innerHTML += "color.blue = " + color.blue + "<br>";
      resEle.innerHTML += "color.pink = " + color.pink + "<br>";
   });
</script>
</body>
</html>