我们可以在数组中的 JavaScript 对象之间共享方法吗?

javascriptweb developmentobject oriented programming更新于 2025/8/30 5:32:17

以下是在数组中的对象之间共享方法的代码 −

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>Share a method between objects in an array</h1>
<div class="result"></div>
<button class="btn">点击此处</button>
<h3>Click on the above button to call welcome() method of all person objects</h3>
<script>
   let resEle = document.querySelector(".result");
   function Person(firstName, lastName) {
      this.firstName = firstName;
      this.lastName = lastName;
   }
   Person.prototype.welcome = function () {
      return "Welcome " + this.firstName + " " + this.lastName;
   };
   let obj = [
      new Person("Rohit", "Sharma"),
      new Person("Shawn", "Mendes"),
      new Person("Michael", "Clarke"),
   ];
   document.querySelector(".Btn").addEventListener("click", () => {
      obj.forEach((item) => {
         resEle.innerHTML += item.welcome() + "";
      });
   });
</script>
</body>
</html>