JavaScriptを使用してオブジェクトを単一のオブジェクト配列にマージする方法は？

以下は、オブジェクトを単一のオブジェクト配列にマージするコードです-

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;
   }
   .sample {
      color: red;
   }
</style>
</head>
<body>
<h1>Merge objects into a single object array</h1>
<div class="sample">
[{id:22, class:7},{name:'Rohan', age:12},{state:'Delhi',country:'India'}]
</div>
<div class="result"><br /></div>
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to merge the above objects inside array into a single object</h3>
<script>
   let resEle = document.querySelector(".result");
   let BtnEle = document.querySelector(".Btn");
   let personObj = [
      { id: 22, class: 7 },
      { name: "Rohan", age: 12 },
      { state: "Delhi", country: "India" },
   ];
   BtnEle.addEventListener("click", () => {
      personObj = Object.assign(...personObj);
      for (let i in personObj) {
         resEle.innerHTML += "key = " + i + " : Value = " + personObj[i] + "<br>";
      }
   });
</script>
</body>
</html>