我们可以使用 JavaScript 中的解构为对象分配新属性吗?

javascriptweb developmentobject oriented programming更新于 2025/8/30 13:32:17

以下是使用 JavaScript 中的解构为对象分配新属性的代码 −

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,.sample {
      font-size: 18px;
      font-weight: 500;
      color: rebeccapurple;
   }
   .result {
      color: red;
   }
</style>
</head>
<body>
<h1>Assign new property to an object using deconstruction</h1>
<div class="sample">{"a":11,"b":22,"c":44}</div>
<div class="result"></div>
<button class="btn">点击此处</button>
<h3>Click on the above button to assign values to obj by destructuring above object</h3>
<script>
   let resEle = document.querySelector(".result");
   let obj = {};
   let obj1 = {
      a: 11,
      b: 22,
      c: 44,
   };
   ({ a: obj.a, b: obj.b, c: obj.c } = obj1);
   document.querySelector(".Btn").addEventListener("click", () => {
      for (let i in obj) {
         resEle.innerHTML += "key = " + i + " : Value = " + obj[i] + "";
      }
   });
</script>
</body>
</html>